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.. ==================================================
.. Header hierachy
.. ==
..  --
..   ^^
..    ''
..     ;;
..      ,,
..
.. --------------------------------------------------
.. External Links: `Bootstrap <http://getbootstrap.com/>`_:
.. Add Images: https://wiki.typo3.org/ReST_Syntax#Images
..
.. -*- coding: utf-8 -*- with BOM.


.. include:: Includes.txt


.. _installation:

Installation
============

Preparation
-----------

Report & Form
^^^^^^^^^^^^^

In PHP 5.x the QFQ extension needs  the PHP MySQL native driver. The following functions are used and are only available with the
native driver (see also: http://dev.mysql.com/downloads/connector/php-mysqlnd/):

* mysqli::get_result (important),
* mysqli::fetch_all (nice to use)

To normalize UTF8 input, the *php5-intl* resp. *php7.0-intl* package is needed by

* normalizer::normalize()

Preparation for Ubuntu 14.04::

	sudo apt-get install php5-mysqlnd php5-intl
	sudo php5enmod mysqlnd
	sudo service apache2 restart

Preparation steps for Ubuntu 16.04::

	sudo apt install php7.0-intl

Print page via wkhtmltopdf
^^^^^^^^^^^^^^^^^^^^^^^^^^

Different browser prints the same page in different variations. To prevent this, QFQ implements a small PHP wrapper `print.php`
which uses http://wkhtmltopdf.org/ (webkit based) to convert HTML to PDF. The converter is not included in QFQ and has
to be manually installed.

Hint: The Ubuntu package `wkhtmltopdf` needs a running Xserver - this does not work on a headless webserver. Best is to
install the QT version from the named website above.

In config.qfq.ini specify the:

* installed `wkhtmltopdf` binary,
* the site base URL.

Provide a `print this page`-link (replace {current pageId})::

	<a href="typo3conf/ext/qfq/qfq/api/print.php?id={current pageId}">Print this page</a>

Any parameter specified after `print.php` will be delivered to `wkhtmltopdf` as part of the URL.

Typoscript code to implement a print link on every page::

	10 = TEXT
	10 {
		wrap = <a href="typo3conf/ext/qfq/qfq/api/print.php?id=|&type=2"><span class="glyphicon glyphicon-print" aria-hidden="true"></span> Printview</a>
		data = page:uid
	}

Setup
-----

* Install the extension via the Extensionmanager.

  * If you install the extension by manual download/upload and get an error message
    "can't activate extension": rename the downloaded zip file to `qfq.zip` or `qfq_<version>.zip` (e.g. version: 0.9.1).

  * If the Extensionmanager stops after importing: check your memory limit in php.ini.

* Enable the online local-documentation_.
* Copy/rename the file *<Documentroot>/typo3conf/ext/<ext_dir>/config.example.qfq.ini* to
  *<Documentroot>/typo3conf/config.qfq.ini* and configure the necessary values: `config.qfq.ini`_
  The configuration file is outside the extension directory to not loose it during updates.
* Play the SQL File *<ext_dir>/qfq/sql/formEditor.sql* to fill the database with the *FormEditor* records.
* Configure Typoscript to include Bootstrap, jQuery, QFQ javascript and CSS files.

::

	page.meta {
	  X-UA-Compatible = IE=edge
	  X-UA-Compatible.attribute = http-equiv
	  viewport=width=device-width, initial-scale=1
	}

	page.includeCSS {

		file1 = typo3conf/ext/qfq/Resources/Public/Css/bootstrap.min.css
		file2 = typo3conf/ext/qfq/Resources/Public/Css/bootstrap-theme.min.css
		file3 = typo3conf/ext/qfq/Resources/Public/Css/jqx.base.css
		file4 = typo3conf/ext/qfq/Resources/Public/Css/jqx.bootstrap.css
		file5 = typo3conf/ext/qfq/Resources/Public/Css/qfq-bs.css
	}

	page.includeJS {

		file1 = typo3conf/ext/qfq/Resources/Public/JavaScript/jquery.min.js
		file2 = typo3conf/ext/qfq/Resources/Public/JavaScript/bootstrap.min.js
		file3 = typo3conf/ext/qfq/Resources/Public/JavaScript/validator.min.js
		file4 = typo3conf/ext/qfq/Resources/Public/JavaScript/jqx-all.js
		file5 = typo3conf/ext/qfq/Resources/Public/JavaScript/globalize.js
		file6 = typo3conf/ext/qfq/Resources/Public/JavaScript/tinymce.min.js
		file7 = typo3conf/ext/qfq/Resources/Public/JavaScript/EventEmitter.min.js
		file8 = typo3conf/ext/qfq/Resources/Public/JavaScript/qfq.min.js
	}


FormEditor
----------
Setup a *report* to manage all *forms*: Create a Typo3 page and insert a content record of type *qfq*. In the bodytext insert the following code:

::

	# If there is a form given by SIP: show
	form={{form:S}}

	10 {
		# List of Forms: Do not show this list of forms if there is a form given by SIP.
		# Table header.
		sql = SELECT CONCAT('{{pageId:T}}&form=Form&') as Pagen, '#', 'Name', 'Title', 'Table' FROM (SELECT 1) AS fake WHERE  '{{form:SE}}'=''
		head = <table class="table table-hover">
		tail = </table>
		rbeg = <thead><tr>
		rend = </tr></thead>
		fbeg = <th>
		fend = </th>

		10 {
			# All forms
			sql = SELECT CONCAT('{{pageId:T}}&form=Form&r=', f.id) as Pagee, f.id, f.name, f.title, f.tableName, CONCAT('form=Form&r=', f.id) as Paged FROM Form AS f  ORDER BY f.name
			rbeg = <tr>
			rend = </tr>
			fbeg = <td>
			fend = </td>
		}
	}

.. _config-qfq-ini:

config.qfq.ini
--------------

+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| Keyword                     | Example                                 | Description                                                                |
+=============================+=========================================+============================================================================+
| DB_USER                     | DB_USER=qfqUser                         | Credentials configured in MySQL                                            |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| DB_PASSWORD                 | DB_PASSWORD=12345678                    | Credentials configured in MySQL                                            |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| DB_SERVER                   | DB_SERVER=localhost                     | Hostname of MySQL Server                                                   |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| DB_NAME                     | DB_NAME=qfq_db                          | Database name                                                              |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| DB_NAME_TEST                | DB_NAME_TEST=qfq_db_test                | Used during development of QFQ                                             |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| DB_INIT                     | DB_INIT=set names utf8                  | Global init for using the database.                                        |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| SQL_LOG                     | SQL_LOG=sql.log                         | Filename to log SQL commands: relative to <ext_dir> or absolute.           |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| SQL_LOG_MODE                | SQL_LOG_MODE=modify                     | *all*: every statement will be logged - this is a lot                      |
|                             |                                         | *modify*: log only statements who change data                              |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| SHOW_DEBUG_INFO             | SHOW_DEBUG_INFO=auto                    | Possible values: auto|yes|no. For 'auto': If a BE User is logged in,       |
|                             |                                         | debug information will be shown on the fronend.                            |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| CSS_LINK_CLASS_INTERNA    L | CSS_LINK_CLASS_INTERNAL=internal        | CSS class name of links which points to internal tagets                    |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| CSS_LINK_CLASS_EXTERNAL     | CSS_LINK_CLASS_EXTERNAL=external        | CSS class name of links which points to internal tagets                    |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| CSS_CLASS_QFQ_CONTAINER     |CSS_CLASS_QFQ_CONTAINER=container        | QFQ with own Bootstrap: 'container'.                                       |
|                             |                                         | QFQ already nested in Bootstrap of mainpage: <empty>                       |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| CSS_CLASS_QFQ_FORM_PILL     |CSS_CLASS_QFQ_FORM_PILL=qfq-color-grey-1 | Wrap around title bar for pills: CSS Class, typically a background color   |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| CSS_CLASS_QFQ_FORM_BODY     |CSS_CLASS_QFQ_FORM_BODY=qfq-color-grey-2 | Wrap around formelements: CSS Class, typically a background color          |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| DATE_FORMAT                 | DATE_FORMAT= yyyy-mm-dd                 | Possible options: yyyy-mm-dd, dd.mm.yyyy                                   |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| FORM_DATA_PATTERN_ERROR     |FORM_DATA_PATTERN_ERROR=please check pa. | Customizable error message used in validator.js. 'pattern' violation       |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| FORM_DATA_REQUIRED_ERROR    |FORM_DATA_REQUIRED_ERROR=missing value   | Customizable error message used in validator.js. 'required' fields         |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| FORM_DATA_MATCH_ERROR       |FORM_DATA_MATCH_ERROR=type error         | Customizable error message used in validator.js. 'match' retype mismatch   |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| FORM_DATA_ERROR             |FORM_DATA_ERROR=generic error            | Customizable error message used in validator.js. 'no specific' given       |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| FORM_BUTTON_ON_CHANGE_CLASS | FORM_BUTTON_ON_CHANGE_CLASS=alert-info btn-info | Color for save button after modification                           |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| BASE_URL_PRINT              | BASE_URL_PRINT=http://example.com       | URL where wkhtmltopdf will fetch the HTML (no parameter, those comes later)|
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+
| WKHTMLTOPDF                 | WKHTMLTOPDF=/usr/bin/wkhtmltopdf        | Binary where to find wkhtmltopdf                                           |
+-----------------------------+-----------------------------------------+----------------------------------------------------------------------------+


Example: *typo3conf/config.qfq.ini*

::

	; To get internal default values, inactivate the option by commenting (= ';') it.
	DB_USER = qfqUser
	DB_SERVER = localhost
	DB_PASSWORD = 12345678
	DB_NAME = qfq_db
	DB_INIT = set names utf8
	SQL_LOG = sql.log
	SHOW_DEBUG_INFO = auto
	CSS_LINK_CLASS_INTERNAL = internal
	CSS_LINK_CLASS_EXT = external
	;CSS_CLASS_QFQ_CONTAINER =
	;CSS_CLASS_QFQ_FORM =
	CSS_CLASS_QFQ_FORM_PILL = qfq-color-grey-1
	CSS_CLASS_QFQ_FORM_BODY = qfq-color-grey-2
	;FORM_DATA_PATTERN_ERROR =
	;FORM_DATA_REQUIRED_ERROR =
	;FORM_DATA_MATCH_ERROR =
	;FORM_DATA_ERROR =
	;FORM_BS_LABEL_COLUMNS = 3
	;FORM_BS_INPUT_COLUMNS = 6
	;FORM_BS_NOTE_COLUMNS = 3
	BASE_URL_PRINT=http://example.com
	WKHTMLTOPDF=/usr/bin/wkhtmltopdf

.. _local-documentation:

Local Documentation
-------------------

To render the QFQ reST documentation:

* Take care to have 'unzip' and 'Python setuptools' installed (necessary to run).

Preparation for Ubuntu 16.04::

	sudo apt install unzip python-setuptools python-pip

* Install the extension "Sphinx Python Documentation Generator and Viewer" (sphinx).

  * Execute the update script (symbol 'two arrows as a circle' behind the extension name)
  * Choose 'Sphinx 1.4.4' - click on 'Import'.

* In the Exension Manager open the configuration dialog of the extension 'sphinx'. Activate the 'Sphinx 1.4.4' option and save it.
* On top of the browser window click on the 'question mark' to open the menu, choose 'Sphinx'.
* Show doumentation 'QFQ Extension'

* If you have problems with the rendering, please check: http://mbless.de/blog/2015/01/26/sphinx-doc-installation-steps.html

.. _concept:

Concept
=======

The QFQ extension is activated through `tt-content` records of type `QFQ`. One (or more) tt-content records per Typo3
page are necessary to render *forms* and *reports*.

Access privileges
-----------------

The Typo3 FE Groups can be used to implement access privileges. Such groups are assigned to
* Typo3 FE users,
* Typo3 pages,
* and/or Typo3 content records (e.g. QFQ records).

This will be used for general page structure privileges.

A `record base` privileges controlling (e.g. which user can edit
which person record) will be implizit configured, by the way that records are viewable / editable (or not) through
SQL in the specifiq QFQ tt-content statements.

Typo3 QFQ content element
-------------------------

Insert one or more QFQ content elements on a Typo3 page. Specify column and language per content record as wished.

The title of the QFQ content element will not be rendered. It's only visible in the backend for orientation.

QFQ Keywords (Bodytext)
^^^^^^^^^^^^^^^^^^^^^^^

 +-------------------+---------------------------------------------------------------------------------+
 | Name              | Explanation                                                                     |
 +===================+=================================================================================+
 | form              | Formname defined in ttcontent record bodytext                                   |
 |                   | * Fix. E.g.: **form = person**                                                  |
 |                   | * by SIP: **form = {{form}}**                                                   |
 |                   | * by SQL: **form = {{SELECT c.form FROM conference AS c WHERE c.id={{a:C}} }}** |
 +-------------------+---------------------------------------------------------------------------------+
 | r                 | <record id> The form will load the record with the specified id                 |
 |                   | * Variants: **r = 123**, by SQL: **r = {{SELECT ...}}**                         |
 |                   | * If not specified, the default is '0'                                          |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.db        | Select a DB. Only necessary if a different than the standard DB should be used. |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.fbeg      | Start token for every field (=column)                                           |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.fend      | End token for every field (=column)                                             |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.head      | Start token for whole <level>                                                   |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.tail      | End token for whole <level>                                                     |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.rbeg      | Start token for row.                                                            |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.rbgd      | Alternating (per row) token                                                     |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.rend      | End token for row. Will be rendered **before** subsequent levels are processed  |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.renr      | End token for row. Will be rendered **after** subsequent levels are processed   |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.rsep      | Seperator token between rows                                                    |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.fsep      | Seperator token between fields (=columns)                                       |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.sql       | SQL Query                                                                       |
 +-------------------+---------------------------------------------------------------------------------+
 | <level>.althead   | If <level>.sql is empty, these token will be rendered                           |
 +-------------------+---------------------------------------------------------------------------------+
 | debugShowBodyText | If ='1' and config.qfq.ini:*showDebugInfo=yes* - shows a tooltip with bodytext  |
 +-------------------+---------------------------------------------------------------------------------+

.. _debug:

Debug
^^^^^

* config.ini: *SHOW_DEBUG_INFO = yes|no|auto*

  * *yes*:

    * Form:

      * For every internal link/button, show tooltips with decoded SIP on mouseover.
      * Shows 'Edit form' (wrench symbol) button on a form.

    * Report: Will be configured per tt-content record.

      *debugShowBodyText = 1*

  * *no*: No debug info.

  * *auto*: Depending if there is a Typo3 BE session, set internally:

    * *SHOW_DEBUG_INFO = yes*  (BE session exist)
    * *SHOW_DEBUG_INFO = no*   (no BE session)


.. _variables:

Variables
---------

Most fields of a form or report specification might contain:

* ''constants'' (=strings), this is the standard use case.
* ''variables'' retrieved from the stores (see below),
* ''SQL statements'' (limited set of),
* or any combination of the above.

* A variable (or SQL) statement is surrounded by curly braces:

  *{{VarName[:<store / prio>[:<sanitize class>[:<escape>]]]}}*

* Example:

  *{{r}}*

  *{{index:FS}}*

  *{{name:FS:alnumx:s}}*

  *{{SELECT name FROM person WHERE id=1234}}*

  *{{SELECT name FROM person WHERE id={{r}} }}*

  *{{SELECT name FROM person WHERE id={{key1:C:alnumx}} }}*

* Leading and trailing spaces inside curly braces are removed.

  * *{{ SELECT "Hello World"   }}* acts as *{{SELECT "Hello World"}}*
  * *{{ varname   }}* acts as *{{varname}}*


* There are several stores, from where to retrieve the value. If a value is not found in one store, the next store is searched,
  until a value is found or there are no more stores available.
* If anywhere along the line an empty string is found, this **is** a value: therefore, the search will stop.
* If no value is found, the value is an <empty string>.

URL Parameter
^^^^^^^^^^^^^

* URL (=GET) Parameter can be used in *forms* and *reports* as variables.
* If a value violates a parameter sanitize class, the value becomes an empty string.

Escape
^^^^^^

* Variables used in SQL Statements might cause trouble, if they contain single or double ticks.
* Escaping of single or double is defined by the parameter <escape> (fourth parameter):

  * 's' - single ticks will be escaped.
  * 'd' - double ticks will be escaped.

* It's not possible to escape single and double ticks at the same time.
* Which of them to escape (single or double) depends on the surrounding SQL query.
* Escaping is only necessary inside of SQL queries.

Sanitize class
^^^^^^^^^^^^^^

* All values in Store *C* (Client) and store *F* (Form) will be sanitized:
* All :ref:`predefined-variable-names` have a specific default sanitize class. For these variables, it's not necessary
  to specify a sanitize class.
* All other variables (Store: C, F) get by default the sanitize class defined in the corresponding form. If not defined
  the default class is 'digit'.
* A default sanitize class can be overwritten by individual definition: *{{a:C:all}}*

+------------------+------+-------+-----------------------------------------------------------------------------------------+
| Name             | Form | Query | Pattern                                                                                 |
+==================+======+=======+=========================================================================================+
| **alnumx**       | Form | Query | [A-Za-z][0-9]@-_.,;: /() ÀÈÌÒÙàèìòùÁÉÍÓÚÝáéíóúýÂÊÎÔÛâêîôûÃÑÕãñõÄËÏÖÜŸäëïöüÿ             |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **digit**        | Form | Query | [0-9]                                                                                   |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **numerical**    | Form | Query | [0-9.-+]                                                                                |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **email**        | Form | Query | [a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}                                          |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **min|max**      | Form |       | Compares the value against an lower and upper limit (numeric or string).                |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **min|max date** | Form |       | Compares the value against an lower and upper date or datetime.                         |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **pattern**      | Form |       | Compares the value against a regexp.                                                    |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **allbut**       | Form | Query | All characters allowed, but not [ ]  { } % & \ #. The used regexp: '^[^\[\]{}%&\\#]+$', |
+------------------+------+-------+-----------------------------------------------------------------------------------------+
| **all**          | Form | Query | no sanitizing                                                                           |
+------------------+------+-------+-----------------------------------------------------------------------------------------+



Store
=====

Only variables that are known in a specified store can be substituted.

 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 |Name |Description                                                                             | Content                                                                    |
 +=====+========================================================================================+============================================================================+
 | F   | :ref:`STORE_FORM`: data not saved in database yet.                                     | All native *FormElements*. Recent values from the Browser.                 |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | S   | :ref:`STORE_SIP`: Client parameter 's' will indicate the current SIP, which will be    | sip, r (recordId), form                                                    |
 |     | loaded from the SESSION repo to the SIP-Store.                                         |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | R   | :ref:`STORE_RECORD`: Record - the current record loaded in the form                    | All columns of the current record from the current table                   |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | B   | :ref:`STORE_BEFORE`: Record - the current record loaded in the form before any update  | All columns of the current record from the current table                   |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | P   | Parent record. E.g.: on multi forms the current record of the outer query              | All columns of the MultiSQL Statement from the table for the current row   |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | D   | Default values column : The *table.column* specified *default value*.                  |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | M   | Column type: The *table.column* specified *type*                                       |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | C   | :ref:`STORE_CLIENT`: POST variable, if not found: GET variable                         | Parameter sent from the Client (=Browser).                                 |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | T   | :ref:`STORE_TYPO3`: a) Bodytext (ttcontent record), b) Typo3 internal variables        | See Typo3 tt_content record configuration                                  |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | V   | :ref:`STORE_VARS`: Generic variables                                                   |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | 0   | *Zero* - allways value: 0, might be helpful if a variable is empty or undefined and    | Any key                                                                    |
 |     | will be used in an SQL statement.                                                      |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | E   | *Empty* - allways an empty string, might be helpful if a variable is empty or undefined| Any key                                                                    |
 |     | and will be used in an SQL statement                                                   |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | Y   | :ref:`STORE_SYSTEM`: a) Database, b) helper vars for logging/debugging:                |                                                                            |
 |     | SYSTEM_SQL_RAW ... SYSTEM_FORM_ELEMENT_COLUMN, c) Any custom fields: CONTACT, HELP, ...|                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+

* Default *<prio>*: *FSRVD* - Form / SIP / Record / Vars / Table definition.
* Hint: Preferable, parameter should be submitted by SIP, not by Client (=URL).

  * Warning: Data submitted via 'Client' can be easily spoofed and altered.
  * Best: Data submitted via SIP never leaves the server, cannot be spoofed or altered by the user.
  * SIPs can _only_ be defined by using *Report*. Inside of *Report* use columns 'Link' (with attribute 's'), 'page?' or 'Page?'.

.. _predefined-variable-names:

Predefined variable names
-------------------------

.. _STORE_FORM:

Store: *FORM* - F
^^^^^^^^^^^^^^^^^

* Sanatized: *yes*
* Represents the values in the form, typically before saving them.
* Used for:

  * *FormElements* who will be rerendered, after a parent *FormElement* has been changed by the user.
  * *FormElement* actions, before saving the form.
  * Values will be sanitized by the class configured in corresponding the *FormElement*. By default, the sanitize class is `alnumx`.

 +---------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                            | Explanation                                                                                                                                |
 +=================================+============================================================================================================================================+
 | <FormElement name>              | Name of native *FormElement*. To get, exactly and only, the specified *FormElement* (for 'pId'): *{{pId:F}}*                               |
 +---------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+

.. _STORE_SIP:

Store: *SIP* - S
^^^^^^^^^^^^^^^^

* Sanatized: *no*
* Filled automatically by creating links. E.g.:

  * in `Report` by using `_page?` or `_link` (with active 's')
  * in `Form` by using subrecords: 'new', 'edit', 'delete' links (system) or by column type `_page?`, `_link`.

 +-------------------------+-----------------------------------------------------------+
 | Name                    | Explanation                                               |
 +=========================+===========================================================+
 | sip                     | 13 char uniqid                                            |
 +-------------------------+-----------------------------------------------------------+
 | r                       | current record id                                         |
 +-------------------------+-----------------------------------------------------------+
 | form                    | current form name                                         |
 +-------------------------+-----------------------------------------------------------+
 | table                   | current table name                                        |
 +-------------------------+-----------------------------------------------------------+
 | urlparam                | all non Typo3 paramter in one string                      |
 +-------------------------+-----------------------------------------------------------+
 | <user defined>          | additional user defined link parameter                    |
 +-------------------------+-----------------------------------------------------------+

.. _STORE_RECORD:

Store: *RECORD* - R
^^^^^^^^^^^^^^^^^^^

* Sanatized: *no*
* Current record loaded in Form.
* If r=0, alle values are empty.

 +------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                   | Explanation                                                                                                                                      |
 +========================+==================================================================================================================================================+
 | <column name>          | Name of a column of the primary table (as defined in the current form). To get, exactly and only, the specified form *FormElement*: *{{pId:R}}*  |
 +------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+

.. _STORE_BEFORE:

Store: *BEFORE* - B
^^^^^^^^^^^^^^^^^^^

* Sanatized: *no*
* Current record loaded in Form without any modification.
* If r=0, alle values are empty.

This store is handy to compare new and old values of a form.

 +------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                   | Explanation                                                                                                                                      |
 +========================+==================================================================================================================================================+
 | <column name>          | Name of a column of the primary table (as defined in the current form). To get, exactly and only, the specified form *FormElement*: *{{pId:R}}*  |
 +------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------+

.. _STORE_CLIENT:

Store: *CLIENT* - C
^^^^^^^^^^^^^^^^^^^

* Sanatized: *yes*

 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                    | Explanation                                                                                                                              |
 +=========================+==========================================================================================================================================+
 | s                       | =SIP                                                                                                                                     |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | r                       | record id. Typically stored in SIP, rarely specified on the URL                                                                          |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | keySemId                | always current Semester Id                                                                                                               |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | keySemIdUser            | *{{keySemIdUser}}*, may be changed by user                                                                                               |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | HTTP_HOST               | current HTTP HOST                                                                                                                        |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | REMOTE_ADDR             | Client IP address                                                                                                                        |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | '$_SERVER[*]'           | All other variables accessable by *$_SERVER[]*. Only the often used have a pre-defined sanitize class.                                   |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | form                    | Unique name of current form                                                                                                              |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | ANREDE                  | *{{sex}}* == male >> Sehr geehrter Herr, *{{sex}}* == female  Sehr geehrte Frau                                                          |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | EANREDE                 | *{{sex}}* == male >> Dear Mr., *{{sex}}* == female >> Dear Mrs.                                                                          |
 +-------------------------+------------------------------------------------------------------------------------------------------------------------------------------+

.. _STORE_TYPO3:

Store: *TYPO3* (Bodytext) - T
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* Sanatized: *no*

 +-------------------------+-------------------------------------------------------------------+----------+
 | Name                    | Explanation                                                       | Note     |
 +=========================+===================================================================+==========+
 | form                    | Formname defined in ttcontent record bodytext                     | see note |
 |                         |                                                                   |          |
 |                         | * Fix. E.g. *form = person*                                       |          |
 |                         | * via SIP. E.g. *form = {{form}}*                                 |          |
 +-------------------------+-------------------------------------------------------------------+----------+
 | pageId                  | Record id of current Typo3 page                                   | see note |
 +-------------------------+-------------------------------------------------------------------+----------+
 | pageType                | Current selected page type (typically URL parameter 'type')       | see note |
 +-------------------------+-------------------------------------------------------------------+----------+
 | pageLanguage            | Current selected page language (typically URL parameter 'L')      | see note |
 +-------------------------+-------------------------------------------------------------------+----------+
 | ttcontentUid            | Record id of current Typo3 content element                        | see note |
 +-------------------------+-------------------------------------------------------------------+----------+
 | feUser                  | Logged in Typo3 FE User                                           |          |
 +-------------------------+-------------------------------------------------------------------+----------+
 | feUserUid               | Logged in Typo3 FE User uid                                       |          |
 +-------------------------+-------------------------------------------------------------------+----------+
 | feUserGroup             | FE groups of logged in Typo3 FE User                              |          |
 +-------------------------+-------------------------------------------------------------------+----------+

* **note**: not available
  * in 'dynamicUpdate' or
  * by *FormElement* class 'action' with type 'beforeSave', 'afterSave', 'beforeDelete', 'afterDelete'.

.. _STORE_VARS:

Store: *VARS* - V
^^^^^^^^^^^^^^^^^

* Sanatized: *no*

 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | Name                    | Explanation                                                                                                                                |
 +=========================+============================================================================================================================================+
 | random                  | random string with length of 32 chars, alphanum                                                                                            |
 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | slaveId                 | see *FormElement* `action`                                                                                                                 |
 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | filename                | Original filename of an uploaded file via an 'upload'-FormElement. Valid only during processing of the current 'upload'-formElement.       |
 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | fileDestinaton          | Destination (path & filename) for an uploaded file. Defined in an 'upload'-FormElement.parameter. Valid: same as 'filename'.               |
 +-------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+


.. _STORE_SYSTEM:

Store: *SYSTEM* - Y
^^^^^^^^^^^^^^^^^^^

* Sanatized: *no*

 +-------------------------+--------------------------------------------------------------------------+
 | Name                    | Explanation                                                              |
 +=========================+==========================================================================+
 | DB_USER                 | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | DB_SERVER               | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | DB_NAME                 | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | DB_INIT                 | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | SQL_LOG                 | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | SQL_LOG_MODE            | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | SHOW_DEBUG_INFO         | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | CSS_LINK_CLASS_INTERNAL | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | CSS_LINK_CLASS_EXTERNAL | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | CSS_CLASS_QFQ_CONTAINER | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | EXT_PATH                | computed during runtime                                                  |
 +-------------------------+--------------------------------------------------------------------------+
 | SITE_PATH               | computed during runtime                                                  |
 +-------------------------+--------------------------------------------------------------------------+
 | DATE_FORMAT             | defined in config.ini                                                    |
 +-------------------------+--------------------------------------------------------------------------+
 | class                   | defined in config.ini (CSS_CLASS_QFQ_FORM) or form definition            |
 +-------------------------+--------------------------------------------------------------------------+
 | classPill               | defined in config.ini (CSS_CLASS_QFQ_FORM_PILL) or form definition       |
 +-------------------------+--------------------------------------------------------------------------+
 | classBody               | defined in config.ini (CSS_CLASS_QFQ_FORM_BODY) or form definition       |
 +-------------------------+--------------------------------------------------------------------------+
 | data-pattern-error      | defined in config.ini or form definition                                 |
 +-------------------------+--------------------------------------------------------------------------+
 | data-require-error      | defined in config.ini or form definition                                 |
 +-------------------------+--------------------------------------------------------------------------+
 | data-match-error        | defined in config.ini or form definition                                 |
 +-------------------------+--------------------------------------------------------------------------+
 | data-error              | defined in config.ini or form definition                                 |
 +-------------------------+--------------------------------------------------------------------------+
 | bsLabelColumns          | defined in config.ini (FORM_BS_LABEL_COLUMNS) or form definition         |
 +-------------------------+--------------------------------------------------------------------------+
 | bsInputColumns          | defined in config.ini (FORM_BS_INPUT_COLUMNS) or form definition         |
 +-------------------------+--------------------------------------------------------------------------+
 | bsNoteColumns           | defined in config.ini (FORM_BS_NOTE_COLUMNS) or form definition          |
 +-------------------------+--------------------------------------------------------------------------+
 | sqlFinal                | computed during runtime, used for error reporting                        |
 +-------------------------+--------------------------------------------------------------------------+
 | sqlParamArray           | computed during runtime, used for error reporting                        |
 +-------------------------+--------------------------------------------------------------------------+
 | sqlCount                | computed during runtime, used for error reporting                        |
 +-------------------------+--------------------------------------------------------------------------+

SQL Statement
-------------

* The detection of an SQL command is case *insensitive*.
* Leading  whitespace will be skipped.
* The following commands are interpreted as SQL commands:

  * SELECT
  * INSERT, UPDATE, DELETE, REPLACE, TRUNCATE
  * SHOW, DESCRIBE, EXPLAIN, SET

* A SQL Statement might contain parameters, including additional SQL statements. Inner SQL queries will be executed first.
* All variables will be substituted one by one from inner to outer.
* Maximum recursion depth: 5 (a recursion depth of 2 is sometimes used for mailing with templates, 3 and more probably confuses too much and is therefore not practicable, but supported until depth of 5)
* The number of variables inside an input field or a SQL statement is not limited.
* A resultset of a SQL statement will be imploded over all: concat all columns of a row, concat all rows - there is no glue string.

* Example::

  {{SELECT id, name FROM Person}}
  {{SELECT id, name, IF({{feUser}}=0,'Yes','No')  FROM Vorlesung WHERE sem_id={{keySemId:Y}} }}
  {{SELECT id, city FROM Address AS adr WHERE adr.pId={{SELECT id FROM Account AS acc WHERE acc.name={{feUser}} }} }}

* Special case for SELECT input fields. To deliver a result array specify an '!' before the SELECT: ::

   {{!SELECT ...}}

  * This is only possible for the outermost SELECT.


Form
====

* Forms will be created by using the *QFQ Form Editor* on the Typo3 frontend (HTML form).
* The Formeditor itself consist of two predefined QFQ forms: *form* and *formElement*
* Every form consist of a) a *Form* record and b) multiple *FormElement* records.
* A form is assigned to a  *table*. Such a table is called the *primary table* for this form.
* There are three types of forms which can roughly categorized into:

  * *Simple* form: the form acts on one record, stored in one table.

    * The form will create necessary SQL commands for insert, update and delete (only primary record) automatically.

  * *Advanced* form: the form acts on multiple records, stored in more than one table.

    * Fields of the primary table acts like a *simple* form, all other fields have to be specified with *addNupdate* records.

  * *Multi* form: the form acts simultanously on more than one record. All records use the same *FormElements*.

    * The *FormElements* are defined as a regular *simple* / or *advanced* form, plus a SQL Query, which selects and
      iterates over all records. Those records will be loaded at the same time.


.. _form-main:

Definition
----------

+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
| Name                    | Type                                                     | Description                                                                             |
+=========================+==========================================================+=========================================================================================+
|id                       | int, autoincrement                                       | created by by MySQL                                                                     |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|name                     | string                                                   | unique and speaking name of the form. Form will be identified by this name              |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|title                    | string                                                   | Title, shown on/above the form.                                                         |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|noteInternal             | textarea                                                 | Internal notes: special functionality, used variables, ...                              |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|tableName                | string                                                   | Primay table of the form                                                                |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|permitNew                | enum('sip', 'logged_in', 'logged_out', 'always', 'never')| Default: sip                                                                            |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|permitEdit               | enum('sip', 'logged_in', 'logged_out', 'always', 'never')| Default: sip                                                                            |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|render                   | enum('plain','table', 'bootstrap')                       | Default bootstrap                                                                       |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|requiredParameter        | string                                                   | Name of required SIP parameter, seperated by comma. '#' as comment delimiter            |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|showButton               | set('new', 'delete', 'close', 'save')                    | Default 'new,delete,close,save'. Shown buttons in the upper right corner of the form.   |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|multiMode                | enum('none','horizontal','vertical')                     | Default 'none'                                                                          |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|multiSql                 | text                                                     | Optional. SQL Query which selects all records to edit.                                  |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|multiDetailForm          | string                                                   | Optional. Form to open, if a record is selected to edit (double click on record line)   |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|multiDetailFormParameter | string                                                   | Optional. Translated Parameter submitted to detailform (like subrecord parameter)       |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|forwardMode              | string: 'auto | no | page'                               |                                                                                         |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|forwardPage              | string / query                                           | If $forward=="page": page to jump to                                                    |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|bsLabelColumns           | string                                                   | The bootstrap grid system is based on 12 columns. The sum of *bsLabelColumns*,          |
+-------------------------+----------------------------------------------------------+ *bsInputColumns* and *bsNoteColumns* should be 12. These values here are the base values|
|bsInputColumns           | string                                                   | for all *FormElements*. Exceptions per *FormElement* can be specified per *FormElement*.|
+-------------------------+----------------------------------------------------------+ Default: label=3, input=6, note=3. See :ref:`form-layout`.                              |
|bsNoteColumns            | string                                                   |                                                                                         |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|parameter                | text                                                     | Misc additional parameters. See :ref:`form-parameter`.                                  |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|deleted                  | string                                                   | 'yes'|'no'.                                                                             |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|modified                 | timestamp                                                | updated automatically through stored procedure                                          |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|created                  | datetime                                                 | set once through QFQ                                                                    |
+-------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+

showButton
^^^^^^^^^^

Display or hide the button `new`, `delete`, `close`, `save`.

* *new*: Creates a new record. If the form needs any special parameter via SIP or Client, hide this 'new' button - the necessary parameter are not provided.
* *delete*: This either deletes the current record only, or (if defined via action *FormElement* 'before Delete' ) any specified subrecords.
* *close*: Close the current form. If there are changes, a popup opens and ask to save / close / cancel. The last page from the history will be shown.
* *save*: Save the form.

* Default: show all buttons.

.. _form-parameter:

parameter
^^^^^^^^^

* The following parameter are optional and can be configured in the *Form.parameter* field.

  * Comments: lines starting with a '#' are treated as a comment and will not be parsed.

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+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| Name                     | Type   | Description                                                                                              |
+==========================+========+==========================================================================================================+
| maxVisiblePill           | int    | Show pills upto <maxVisiblePill> as button, all further in a dropdown menu. Eg.: maxVisiblePill=3        |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| class                    | string | HTML div with given class, surrounding the whole form. Eg.: class=container-fluid                        |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| classPill                | string | HTML div with given class, surrounding the `pill` title line.                                            |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| classBody                | string | HTML div with given class, surrounding all *FormElement*.                                                |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| submitButtonText         | string | Show save button, with the <submitButtonText> at the bottom of the form                                  |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| extraDeleteForm          | string | Name of a form which specifies how to delete the primary record and optional slave records               |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-pattern-error       | string | Pattern violation: Text for error message used for all FormElements of current form                      |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-required-error      | string | Required violation: Text for error message used for all FormElements of current form                     |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-match-error         | string | Match violation: Text for error message used for all FormElements of current form                        |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-error               | string | If none specific is defined: Text for error message used for all FormElements of current form            |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| buttonOnChangeClass      | string | Color for save button after user modified some content or current form. E.g.: 'btn-info alert-info'      +
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| ldapServer               | string | FQDN Ldap Server. E.g.: ldap.example.com                                                                 |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| ldapBaseDn               | string | E.g.: ou=dept,dc=example,dc=com                                                                          |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| ldapSearch               | string | E.g.: (|(cn=*?*)(mail=*?*)(ou=*?*)(roomNumber=*?*)(telephoneNumber=*?*))                                 |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadLimit           | int    | Maximum number of entries. The limit is applied to the server (LDAP or SQL) and the Client               |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadMinLength       | int    | Minimum number of characters which have to typed to start the search.                                    |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadLdapValuePrintf | string | Value formatting of LDAP result, per entry. E.g.: '%s / %s / %s', mail, roomnumber, telephonenumber      |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+
| typeAheadLdapKeyPrintf   | string | Key formatting of LDAP result, per entry. E.g.: '%s', mail                                               |
+--------------------------+--------+----------------------------------------------------------------------------------------------------------+

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* Example:

  * maxVisiblePill = 5
  * class = container-fluid
  * classBody = qfq-form-right

submitButtonText
''''''''''''''''

* Optional.
* Default: Empty
* Empty: a 'submit' button with a Bootstrap glyph 'check' symbol is rendered at the *top right corner* of the form.
* Non Empty: a 'submit' button, with <submitButtonText>, is rendered at the bottom of the form (without a 'check' glyph
  symbol). Typically 'ShowButton: Save' will be unchecked to hide the regular save glyph symbol.

class
'''''

* Optional.
* Default: `container`
* Any CSS class name(s) can be specified.
* Check `typo3conf/ext/qfq/Resources/Public/Css/qfq-bs.css` for predefined classes.
* Typical use: adjust the floating rules of the form.
  * See: http://getbootstrap.com/css/#overview-container
  * Expand the form over the whole area: `container-fluid`

classPill
'''''''''

* Optional.
* Default: `qfq-color-grey-1`
* Any CSS class name(s) can be specified.
* Check `typo3conf/ext/qfq/Resources/Public/Css/qfq-bs.css` for predefined classes.
* Typical use: adjust the background color of the `pill title` area.
* Predefined background colors: `qfq-color-white`, `qfq-color-grey-1` (dark), `qfq-color-grey-2` (light),
  `qfq-color-blue-1` (dark), `qfq-color-blue-2`. (light)
* `classPill` is only visible on forms with container elemants of type 'Pill'.

classBody
'''''''''

* Optional.
* Default: `qfq-color-grey-2`
* Any CSS class name(s) can be specified.
* Check `typo3conf/ext/qfq/Resources/Public/Css/qfq-bs.css` for predefined classes.
* Typical use:

  * adjust the background color of the *FormElement* area.
  * make all form labels right align: `qfq-form-right`.

* Predefined background colors: `qfq-color-white`, `qfq-color-grey-1` (dark), `qfq-color-grey-2` (light),
  `qfq-color-blue-1` (dark), `qfq-color-blue-2`. (light)

submitButtonText
''''''''''''''''

If specified and non empty, display a regular submit button at the bottom of the page with the given text.
This gives the form a ordinary HTML-form look'n' feel. With this option, the standard buttons on the top right border
should be hided to not confuse the user.

extraDeleteForm
'''''''''''''''

Depending on the database definition, it might be necessary to delete the primary record *and* corresponding slave records.
To not repeat such 'slave record delete definition', an 'extraDeleteForm' can be specified. If the user opens a record
in a form and clicks on the 'delete' button, a defined 'extraDeleteForm'-form will be used to delete primary and slave
records instead of using the current form.
E.g. if there are multiple different forms to work on the same table, all of theses forms might reference to the same
'extraDeleteForm'-form. This simplifies the maintenance.

The 'extraDeleteForm' parameter might be specified for a 'form' and/or for 'subrecords'

FormElements
------------

* Each *form* contains one or more *FormElement*.
* The *FormElements* are divided in three categories:

  * :ref:`class-container`
  * :ref:`class-native`
  * :ref:`class-action`

* Ordering and grouping: Native *FormElements* and Container-Elements (both with feIdContainer=0) will be ordered by 'ord'.
* Inside of a container, all nested elements will be displayed.
* Technical, it's *not* necessary to configure a FormElement for the primary index column `id`.
* Additional options to a *FormElement* will be configured via the *FormElement.parameter* field (analog to *Form.parameter*
  for *Forms* ).

  * Comments: lines starting with a '#' are treated as a comment and will not be parsed.

.. _class-container:

Class: Container
----------------

* Pills are containers for 'fieldset' *and* / *or* 'native' *FormElements*.
* Fieldsets are containers for 'native' *FormElements*.
* TemplateGroups are containers for 'fieldset' *and* / *or* 'native' *FormElements*.

Type: fieldset
^^^^^^^^^^^^^^

* Native *FormElements* can be assigned to a fieldset.
* FormElement settings:

  * *name*: technical name, used as HTML identifier.
  * *label*: Shown title of the fieldset.

Type: pill
^^^^^^^^^^

* Pill is synonymous for a tab. A pill looks like a tab.
* Pills are only available with mode render='bootstrap'.
* If there is at least one pill defined, every native *FormElement* needs to be assigned to a pill or to a fieldset.
* If there is at least one pill defined, every fieldset needs to be assigned to a pill.

* FormElement settings:

  * *name*: technical name, used as HTML identifier.
  * *label*: Label shown on the corresponding pill button or inside the dropdown menu.
  * *type*: *pill*
  * *feIdContainer*: `0`  - Pill's can't be nested.
  * *parameter*:

    * *maxVisiblePill*: `<nr>` - Number of Pill-Buttons shown. Undefined means unlimited. Excess Pill buttons will be
      displayed as a dropdown menu.

.. _class-native:

Type: templateGroup
^^^^^^^^^^^^^^^^^^^

*TemplateGroups* will be used to create a series of grouped (by the given *templateGroup*) *FormElements*.

FormElements can be assigned to a *templateGroup*. These *templateGroup* will be rendered upto *n*-times. On 'form load'
only a single (=first) copy of the *templateGroup* will be shown. Below the last copy of the *templateGroup* an 'add'-button is
shown. If the user click on it, an additional copy of the *templateGroup* is displayed. This can be repeated up to
*templateGroup.maxLength* times. Also, the user can 'remove' previously created copies by clicking on a remove button near
beside every *templateGroup*. The first copy of a templateGroup can't be removed.

* FormElement settings:

  * *label*: Shown in the FormElement-editor *container* field.
  * *maxLength*: Maximum number of copies of the current *templateGroup*. Default: 5.
  * *bsLabelColumn*, *bsInputColumn*, *bsNoteColumn*: column widths for row with the 'Add' button.
  * *parameter*:

    * *tgAddClass*: Class of the 'add' button. Default: `btn btn-default`.
    * *tgAddText*: Text shown on the button. Default: `Add`.
    * *tgRemoveClass*: Class of the 'remove' button. Default: `btn btn-default`.
    * *tgRemoveText*: Text shown on the button. Default: `Remove`.
    * *tgClass*: Class wrapped around every copy of the *templateGroup*. E.g. the class `qfq-child-margin-top` adds a
      margin between two copies of the *templateGroup*. Default: empty

Multiple *templateGroups* per form are allowed.

The name of the native FormElements, inside the templateGroup, which represents the effective table columns, uses the placeholder
`%d`. E.g. the columns `grade1`, `grade2`, `grade3` needs a *FormElement.name* = `grade%d`. The counting will always start with 1.
The placeholder `%d` can also be used in the *FormElement.label*

Class: Native
-------------

Fields:

+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
| Name          | Type                        | Description                                                                                       |
+===============+=============================+===================================================================================================+
| id            | int                         |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
| formId        | int                         |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|feIdContainer  | int                         |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|enabled        | enum('yes'|'no')            |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|dynamicUpdate  | enum('yes'|'no')            | In the browser, *FormElements* with "dynamicUpdate='yes'"  will be updated depending on user      |
|               |                             | input. :ref:`dynamic-update`                                                                      |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|name           | string                      |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|label          | string                      | Label of *FormElement*. Depending on layout model, left or on top of the *FormElement*            |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|mode           | enum('show', 'readonly',    | *Show*: regular user input field. This is the default.                                            |
|               | 'required',                 | *Required*: User has to specify a value. Typically, an <empty string> represents 'no value'.      |
|               | 'disabled' )                | *Readonly*: user can't change any data. Data not saved.                                           |
|               |                             | *Disabled*: *FormElement* is not visible.                                                         |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|modeSql        | `select` statement with     | A value given here overwrites the setting from `mode`. Most usefull with :ref:`dynamic-update`.   |
|               | a value like in `mode`      | E.g.: {{SELECT IF( '{{otherFunding:FR:alnumx}}'='yes' ,'show', 'hidden' }}                        |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|class          | enum('native', 'action',    | Details below.                                                                                    |
|               | 'container')                |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|type           | enum('checkbox', 'date', 'time', 'datetime',  'dateJQW', 'datetimeJQW', 'extra', 'gridJQW', 'text', 'editor', 'note',           |
|               | 'password', 'radio', 'select', 'subrecord', 'upload', 'fieldset', 'pill', 'beforeLoad', 'beforeSave',                           |
|               | 'beforeInsert', 'beforeUpdate', 'beforeDelete', 'afterLoad', 'afterSave', 'afterInsert', 'afterUpdate', 'afterDelete',          |
|               | 'sendMail')                                                                                                                     |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|checkType      | enum('min|max', 'pattern',  |                                                                                                   |
|               | 'number', 'email')          |                                                                                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|checkPattern   | 'regexp'                    |If $checkType=='pattern': pattern to match                                                         |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|onChange       | string                      |List of *FormElement*-names of current form, separated by ', ', If one of the named *FormElements* |
|               |                             | change, reload own data / status / mode                                                           |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|ord            | string                      | Display order of *FormElements* ('order' is a reserved keyword)                                   |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|tabindex       | string                      |HTML tabindex attribute                                                                            |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|size           | string                      |Visible length of input element. Might be ommited, depending on the choosen form layout.           |
|               |                             |Format: <width>,<height> (in characters)                                                           |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|bsLabelColumns | string                      | Number of bootstrap grid columns for label. By default empty, value inherits from the form.       |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|bsInputColumns | string                      | Number of bootstrap grid columns for input. By default empty, value inherits from the form.       |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|bsNoteColumns  | string                      | Number of bootstrap grid columns for note. By default empty, value inherits from the form.        |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|maxLength      | string                      |Maximum characters for input.                                                                      |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|note           | string                      |Note of *FormElement*. Depending on layout model, right or below of the *FormElement*.             |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|tooltip        | text                        |Display this text as tooltip on mouse over.                                                        |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|placeholder    | string                      |Text, displayed inside the input element in light grey.                                            |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|clientJs       | text                        |Javascript called on 'on change' *FormElement*                                                     |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|value          | text                        |Default value                                                                                      |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|sql1           | text                        |SQL query                                                                                          |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|parameter      | text                        |Might contain misc parameter. Depends on the type of *FormElement*.                                |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|feGroup        | string                      | Comma-separated list of Typo3 FE Group ID. NOT SURE IF THIS WILL BE IMPLEMENTED. Native           |
|               |                             | *FormElements*, fieldsets and pills can be assigned to feGroups. Group status: show, hidden,      |
|               |                             | disabled. Group Access: FE-Groups. User will be assigned to FE-Groups and the form definition     |
|               |                             | reference such FE-groups. Easy way of granting permission.                                        |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|deleted        | string                      | 'yes'|'no'.                                                                                       |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|modified       | timestamp                   |updated automatically through stored procedure                                                     |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|created        | datetime                    |set once through QFQ                                                                               |
+---------------+-----------------------------+---------------------------------------------------------------------------------------------------+

.. _fe-parameter-attributes:

Attributes defined in the parameter field
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

See also at specific *FormElement* definitions.

+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| Name                   | Type   | Note                                                                                                     |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-pattern-error     | string | Pattern violation: Text for error message used for all FormElements of current form                      |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-required-error    | string | Required violation: Text for error message used for all FormElements of current form                     |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-match-error       | string | Match violation: Text for error message used for all FormElements of current form                        |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| data-error             | string | If none specific is defined: Text for error message used for all FormElements of current form            |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| htmlBefore             | string | HTML Code wrapped before the complete *FormElement*                                                      |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| htmlAfter              | string | HTML Code wrapped after the complete *FormElement*                                                       |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+
| wrapRow                | string | If specified, skip default wrapping (`<div class='col-md-?>`). Instead the given string is used.         |
+------------------------+--------+                                                                                                          |
| wrapInput              | string |                                                                                                          |
+------------------------+--------+                                                                                                          |
| wrapInput              | string |                                                                                                          |
+------------------------+--------+                                                                                                          |
| wrapNote               | string |                                                                                                          |
+------------------------+--------+----------------------------------------------------------------------------------------------------------+

Effect matrix
^^^^^^^^^^^^^

+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| Attribute        | checkbox | dateJQW | datetimeJQW |  gridJQW | extra  | text  | note | password | radio | select | subrecord | timeJQW | upload | editor |
+==================+==========+=========+=============+==========+========+=======+======+==========+=======+========+===========+=========+========+========+
|id                |Internal id                                                                                                                              |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|formId            |Form                                                                                                                            |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|containerId       |Assign the *FormElement* to user defined fieldSet or pill                                                                       |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|enabled           |*FormElement* is active or not                                                                                                  |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|name              |Name of a column of the primary table. *FormElements* with a corresponding table will be saved automatically.                   |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|label             |Label shown to the user.                                                                                                        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|mode              |show, readonly, required, lock, disable.                                                                                        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|class             |native                                                                                                                          |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|type              | checkbox | dateJQW | datetimeJQW |  gridJQW | extra  | text  | note | password | radio | select | subrecord | timeJQW | upload |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|checkType         |          |   -     |   -         |          |        |   -   |      |   -      |       |        |           |   -     |        |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|checkPattern      |          |   -     |   -         |          |        |   -   |      |   -      |       |        |           |   -     |        |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|onChange          |   -      |   -     |   -         |          |        |   -   |      |   -      |   -   |   -    |           |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|ord               |   -      |   -     |   -         |   -      |   -    |   -   |   -  |   -      |   -   |   -    |   -       |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|tabindex          |   -      |   -     |   -         |   -      |   -    |   -   |   -  |   -      |   -   |   -    |   -       |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|size              |   -      |         |             |          |        |   -   |      |   -      |   -   |   -  2 |           |   -     |   -  ? |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|maxLength         |   1      |         |             |          |        |   -   |      |   -      |   - 1 |        |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|note              |   -      |   -     |   -         |          |        |   -   |   -  |   -      |   -   |   -    |   -       |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|tooltip           |   -      |   -     |   -         |          |        |   -   |      |   -      |   -   |   -    |           |   -     |   -    |   ?    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|placeholder       |          |   -     |   -         |          |        |   -   |      |          |       |        |           |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|clientJs          |          |   -     |   -         |   -      |        |   -   |      |   -      |   -   |   -    |           |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|value             |   -      |   -     |   -         |   -      |   -    |   -   |   -  |   -      |   -   |   -    |           |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|sql1              |?                                                                                                                                        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
|*Additional attributes in Field 'parameter'. Typically in key=value format.*                                                                                |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| type             | checkbox | dateJQW | datetimeJQW | gridJQW  | extra  | text  | note | password | radio | select | subrecord | timeJQW | upload | editor |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| accept           |?                                                                                                                                        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| alt              |?                                                                                                                               |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| autocomplete     |          |   -     |   -         |          |        |   -   |      |          |       |        |           |   -     |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| autofocus        |   -      |   -     |   -         |          |        |   -   |      |   -      |   -   |   -    |           |   -     |   -    |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| checkBoxMode     |   -      |   -     |             |          |        |       |      |          |       |        |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| checked          |   -      |         |             |          |        |   -   |      |          |   -   |        |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| unchecked        |   -      |         |             |          |        |   -   |      |          |   -   |        |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| label2           |   -      |         |             |          |        |       |      |          |   -   |        |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| itemList         |   -      |         |             |          |        |       |      |          |   -   |   -    |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| emptyItemAtStart |          |         |             |          |        |       |      |          |       |   -    |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| emptyItemAtEnd   |          |         |             |          |        |       |      |          |       |   -    |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| emptyHide        |          |         |             |          |        |       |      |          |       |   -    |           |         |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| retype           |          | -       | -           |          |        | -     |      | -        |       |        |           | -       |        |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| accept           |          |         |             |          |        |       |      |          |       |        |           |         |   -  3 |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| slaveId          |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| fileDestination  |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| sqlBefore        |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| sqlInsert        |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| sqlDelete        |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+
| sqlAfter         |          |         |             |          |        |       |      |          |       |        |           |         |   -    |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+---------+--------+--------+

* 1: A line break created every <size> elements. Easy way to make checkboxes or radio vertical instead of horizontal.
* 2: Any number >1 makes the 'select' input 'multiple' ready.
* See: https://www.w3.org/TR/html5/forms.html#file-upload-state-(type=file)

* All 'native' *FormElements* like 'input', 'checkbox', ...

'autofocus': The first *FormElement* with this attribute will get the focus after form load. If there is no such attribute
 given to any *FormElement*, the attribute will be automatically assigned to the first editable *FormElement*.

To disable 'autofocus' on a form, set 'autofocus=0' on the first editable *FormElement*.

Note: If there are multiple pills defined on a form, only the first pill will be set with 'autofocus'.

Type: checkbox
^^^^^^^^^^^^^^

Checkboxes can be rendered in mode:

* *single*:

  * One column in a table corresponds to one checkbox.
  * The value for statuses *checked* and *unchecked* are free to choose.
  * This mode is selected, if a) *checkBoxMode* = single, or b) *checkBoxMode* is missing **and** the number of fields of the column definition is <3.
  * *FormElement.parameter*:

    * *checkBoxMode* = single (optional)
    * *checked* = <value> (optional, the value which represents 'checked')

      * If *checked* is empty or missing: If *type* = 'enum' or 'set', get first item of the definition. If *type* = string, get default.

    * *unchecked* = <value> (optional, the value which represents 'unchecked')

      * If *unchecked* is empty or missing: If *type* = 'enum' or 'set', get second item of checked. If *type* = 'string', get ''.

    * *label2* = <value>       (Text right beside checkbox) (optional)


* *multi*:

  * One column in a table represents multiple checkboxes. This is typically useful for the column type *set*.
  * The value for status *checked* are free to choose, the value for status *unchecked* is always the empty string.
  * Each field key (or the corresponding value from the key/value pair) will be rendered right beside the checkbox.
  * *FormElement.parameter*

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    * *checkBoxMode* = multi
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    * *itemList* - E.g.:

      * ``itemList=red,blue,orange``
      * ``itemList=1:red,2:blue,3:orange``

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  * *FormElement.sql1* = ``{{!SELECT id, value FROM someTable}}``
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  * *FormElement.maxlength* - vertical or horizontal alignment:

     * Value: '', 0, 1 - The check boxes will be aligned vertical.
     * Value: >1 - The  check boxes will be aligned horizontal, with a linebreak every 'value' elements.

* *FormElement.parameter*:

  * *emptyHide*: Existence of this item hides an entry with an empty string. This is useful for e.g. Enums, which have an empty
    entry, but the empty value should not be selectable.
  * *emptyItemAtStart*: Existence of this item inserts an empty entry at the beginning of the selectlist.
  * *emptyItemAtEnd*: Existence of this item inserts an empty entry at the end of the selectlist.
  * *buttonClass*: Instead of the plain HTML  checkbox fields, Bootstrap
    `buttons <http://getbootstrap.com/javascript/#buttons-checkbox-radio>`_. are rendered as `checkbox` elements. Use
    one of the following `classes <http://getbootstrap.com/css/#buttons-options>`_:
    * `btn-default` (default, grey),
    * `btn-primary` (blue),
    * `btn-success` (green),
    * `btn-info` (light blue),
    * `btn-warning` (orange),
    * `btn-danger` (red).
    With a given *buttonClass*, all buttons (=radios) are rendered horizontal. A value in *FormElement.maxlength* has no effect.

* *No preselection*:

  * If a form is in 'new' mode and if there is a default value configured on a table column, such a value is shown by default.
    There might be situations, where the user should be forced to select a value (e.g. specifying the gender). An unwanted
    default value can be suppressed by specifying an explicit definition on the FormElement field `value`::

      {{<columnname>:RZ}}

    For existing records the shown value is as expected the value of the record. For new records, it's the value `0`,
    which is typically not one of the ENUM / SET values and therefore nothing is selected.


Type: date
^^^^^^^^^^

* Range datetime: '1000-01-01' to '9999-12-31' or '0000-00-00'. (http://dev.mysql.com/doc/refman/5.5/en/datetime.html)
* Optional:

  * *FormElement.parameter.dateFormat*: yyyy-mm-dd | dd.mm.yyyy

Type: datetime
^^^^^^^^^^^^^^

* Range datetime: '1000-01-01 00:00:00' to '9999-12-31 23:59:59' or '0000-00-00 00:00:00'. (http://dev.mysql.com/doc/refman/5.5/en/datetime.html)
* Optional:

  * *FormElement.parameter*:

    * *dateFormat*: yyyy-mm-dd | dd.mm.yyyy
    * *showSeconds*: 0|1 - shows the seconds. Independent if the user specifies seconds, they are displayed '1' or not '0'.
    * *showZero*: 0|1 - For an empty timestamp, With '0' nothing is displayed. With '1' the string '0000-00-00 00:00:00' is displayed.

Type: extra
^^^^^^^^^^^

* Element is not shown in the browser.
* The element can be used to define / precalculate values for a column, which do not already exist as a native *FormElement*.
* The element is build / computed on form load and saved alongside with the SIP parameter of the current form.
* Access the value without specifying any store (default store priority is sufficient).

Type: text
^^^^^^^^^^

* General input for text and number.
* *FormElement.size*:

  * <number>:  width of input element in characters. Lineheight = 1.
  * <cols>,<rows>: input element = textarea, width=<cols>, height=<rows>

* *FormElement.parameter*:

  * *retype* = 1 (optional): Current input element will be rendered twice. The form can only submitted if both elements are equal.
  * *retypeLabel* =<text> (optional): The label of the second element.
  * *retypeNote* =<text> (optional): The note of the second element.
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  * *characterCountWrap* = <text1>|<text2> (optional). Displays a character counter below the input/textarea element. If
    `text1` / `text2` is missing, just display `<current>/</max>`. Customization: `characterCountWrap=<div class=qfq-cc-style>Count: |</div>`
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  * Also check the  :ref:`fe-parameter-attributes` *data-...-error* to customize error messages shown by the validator.

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Type Ahead
''''''''''

Activating `typeahead` functionality offers an instant lookup of data and displaying them to the user, while the user is
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typing a dropdown box offers the results. As datasource the regular SQL connection or a LDAP query can be used.
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With every keystroke (starting from the *typeAheadMinLength* characters), the already typed value will be transmitted to
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the server, the lookup will be performed and the result, upto *typeAheadLimit* entries, are displayed as the dropdown box.
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* *FormElement.parameter*:

  * *typeAheadLimit* = <number>. Max numbers of result records to be shown. Default is 20.
  * *typeAheadMinLength* = <number>. Minimum length to type before the first lookup starts.

Depending of the `typeahead` setup, the given FormElement will contain the displayed `value` or `key` (if a key/value dict is
configured).

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Configuration via Form / FormElement
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

All of the `typeAhead*` (exception: `typeAheadLdap`) and `ldap*` parameter can be specified in either on the Form.parameter or on FormElement.parameter.

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SQL
;;;

* *FormElement.parameter*:

  * *typeAheadSql* = `SELECT ... AS 'key', ... AS 'value' WHERE name LIKE ? OR firstName LIKE ? LIMIT 100`

    * If there is only one column in the SELECT statement, that one will be used and there is no dict (key/value pair).
    * The query will be fired as a 'prepared statement'.
    * The value, typed by the user, will be replaced on all places where a `?` appears.
    * All `?` will be automatically surrounded by '%'. Therefore wildcard search is implemented: `... LIKE '%<?>%' ...`

LDAP
;;;;

* *FormElement.parameter*:

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  * *typeAheadLdap*  This entry activates the *LDAP* typeahead functionality.
  * *ldapServer* = FQDN of the searched server. E.g.: `directory.uzh.ch`
  * *ldapBaseDn* = Base DN. E.g.: `ou=Addressbook,dc=uzh,dc=ch`
  * *ldapSearch* = LDAP search expression. Every '?' will be replaced with the current typed content.
     E.g.: `(|(cn=*?*)(mail=*?*)(ou=*?*)(roomNumber=*?*)(telephoneNumber=*?*))`
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  * *typeAheadLdapValuePrintf* = regular printf expression, LDAP attributenames will be used as variablenames. Will be shown
      in the dropdownbox. E.g.: `'%s / %s / %s', mail, roomNumber, telephoneNumber`
  * *typeAheadLdapKeyPrintf* = Same as `ldapValuePrintf` - on save, these content will be saved. E.g.: `'%s', mail`

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Type: editor
^^^^^^^^^^^^

* TinyMCE (https://www.tinymce.com, community edition) is used as the QFQ Rich Text Editor.
* The content will be saved as HTML inside the database.
* All configuration and plugins will be configured via the 'parameter' field. Just prepend the word 'editor-' in front
  of each TinyMCE keyword. Check possible options under https://www.tinymce.com/docs/configure/,
  https://www.tinymce.com/docs/plugins/, https://www.tinymce.com/docs/advanced/editor-control-identifiers/#toolbarcontrols
* Bars:

  * Top: *menubar* - by default hidden.
  * Top: *toolbar* - by default visible.
  * Bottom: *statusbar* - by default hidden, exception: *min_height* and *max_height* are given via size parameter.


* The default setting in *FormElement.parameter* is::

    editor-plugins=code link searchreplace table textcolor textpattern visualchars
    editor-toolbar=code searchreplace undo redo | styleselect link table | fontselect fontsizeselect | bullist numlist outdent indent | forecolor backcolor bold italic editor-menubar=false
    editor-statusbar=false

* *FormElement.size*:

  * <min_height>,<max_height>: in pixels, including top and bottom bars. E.g.: 300,600


Type: note
^^^^^^^^^^

An FormElement without any 'input' functionality -just to show some text. Use the typical fields 'label', 'value' and
'note' to be displayed in the corresponding three standard columns.

Type: password
^^^^^^^^^^^^^^

* Like a `text` element, but every character is shown as an asterisk.

Type: radio
^^^^^^^^^^^

* Radio Buttons will be built from one of three sources:

  1. 'sql1': E.g. *{{!SELECT type AS label FROM car }}* or *{{!SELECT type AS label, typeNr AS id FROM car}}* or *{{!SHOW tables}}*.

    * Resultset format 'named': column 'label' and optional a column 'id'.
    * Resultset format 'index':

      * One column in resultset >> first column represents *label*
      * Two or more columns in resultset >> first column represents *id* and second column represents *label*.

  2. *FormElement.parameter*:

    * *itemList* = `<attribute>` E.g.: *itemList=red,blue,orange* or *itemList=1:red,2:blue:3:orange*

  3. Definition of the *enum* or *set* field (only labels, ids are not possible).


* *FormElement.maxlength* = `<value>`

   * Applies only to 'plain' radio elements (not the Bootstrap 'buttonClass' from below)
   * *vertical* or *horizontal* alignment:

     * `<value>`: '', 0, 1 - The radios will be aligned *vertical*.
     * `<value>`: >1 - The readios will be aligned *horizontal*, with a linebreak every 'value' elements.


* *FormElement.parameter*:

  * *emptyHide*: Existence of this item hides an entry with an empty string. This is useful for e.g. Enums, which have an empty
    entry, but the empty value should not be selectable.
  * *emptyItemAtStart*: Existence of this item inserts an empty entry at the beginning of the selectlist.
  * *emptyItemAtEnd*: Existence of this item inserts an empty entry at the end of the selectlist.
  * *buttonClass*: Instead of the plain radio fields, Bootstrap
    `buttons <http://getbootstrap.com/javascript/#buttons-checkbox-radio>`_. are rendered as `radio` elements. Use
    one of the following `classes <http://getbootstrap.com/css/#buttons-options>`_:
    * `btn-default` (default, grey),
    * `btn-primary` (blue),
    * `btn-success` (green),
    * `btn-info` (light blue),
    * `btn-warning` (orange),
    * `btn-danger` (red).
    With a given *buttonClass*, all buttons (=radios) are rendered horizontal. A value in *FormElement.maxlength* has no effect.

* *No preselection*:

  * If there is a default configured on a table column, such a value is selected by default. If the user should actively
    choose an option, the 'preselection' can be omitted by specifying an explicit definition on the FormElement field `value`::

      {{<columnname>:RZ}}

    For existing records the shown value is as expected the value of the record. For new records, it's the value `0`,
    which is typically not one of the ENUM values and therefore nothing is selected.

Type: select
^^^^^^^^^^^^

* Select lists will be built from one of three sources:

  * 'sql1': E.g. *{{!SELECT type AS label FROM car }}* or *{{!SELECT type AS label, typeNr AS id FROM car}}* or *{{!SHOW tables}}*.

    * Resultset format 'named': column 'label' and optional a column 'id'.
    * Resultset format 'index':

      * One column in resultset >> first column represents *label*
      * Two or more columns in resultset >> first column represents *id* and second column represents *label*.

  * *FormElement.parameter*:

    * *itemList* = `<attribute>` - E.g.: *itemList=red,blue,orange* or *itemList=1:red,2:blue:3:orange*

  * Definition of the *enum* or *set* field (only labels, ids are not possible).

* *FormElement.size*: `<value>`

  * `<value>`: <empty>|0|1: Dropdown list.
  * `<value>`: >1: Select field with *size* rows height. Multiple selection of items is possible.

* *FormElement.parameter*:

  * *emptyItemAtStart*: Existence of this item inserts an empty entry at the beginning of the selectlist.
  * *emptyItemAtEnd*: Existence of this item inserts an empty entry at the end of the selectlist.
  * *emptyHide*: Existence of this item hides the empty entry. This is useful for e.g. Enums, which have an empty
    entry and the empty value should not be an option to be selected.

Type: subrecord
^^^^^^^^^^^^^^^

The *FormElement* type 'subrecord' renders a list of records (so called secondary records), typically to show, edit, delete
or add new records. The list is defined as a SQL query. The number of records shown is not limited. These *FormElement*
will be rendered inside the form as a HTML table.

* *sql1*: SQL query to select records. E.g.::

   {{!SELECT a.id AS id, CONCAT(a.street, a.streetnumber) AS a, a.city AS b, a.zip AS c FROM Address AS a}}

  * Notice the **exclamation mark** after '{{' - this is necessary to return an array of elements, instead of a single string.
  * Exactly one column **'id'** has to exist; it specifies the primary record for the target form.
    In case the id should not be visible to the user, it has to be named **'_id'**.
  * Columnname: *[title=]<title>[|[width=]<number>][|nostrip][|icon][|link][|url][|mailto][|_rowClass][|_rowTitle]*

    * All parameter are position independet.
    * Separate parameter by '|'.
    * *[title=]<text>*: Title of the column. The keyword 'title=' is optional. Columns with a title starting with '_' won't be rendered.
    * *[width=]<number>*: Max. width of chars displayed per cell. The keyword 'width=' is optional. Default max width: 20.
      This setting also affects the title of the column.
    * *nostrip*: by default, html tags will be stripped off the cell content before rendering. This protects the table
      layout. 'nostrip' deactivates the cleaning to make pure html possible.
    * *icon*: the cell value contains the name of an icon in *typo3conf/ext/qfq/Resources/Public/icons*. Empty cell values
      will omit an html image tag (=nothing rendered in the cell).
    * *link*: value will be rendered as described under :ref:`column-link`
    * *url*: value will be rendered as a href url.
    * *mailto*: value will be rendered as a href mailto.
    * *_rowClass*

      * The value is a CSS class name(s) which will be rendered in the *<tr class="<_rowClass>">* of the subrecord table.
      * The column itself is hidden to the user.
      * By using Bootstrap, the following predefined classes are available:

        * Text color: *text-muted|text-primary|text-success|text-info|text-warning|text-danger* (http://getbootstrap.com/css/#helper-classes)
        * Row background: *active|success|info|warning|danger* (http://getbootstrap.com/css/#tables-contextual-classes)

    * *_rowTitle*

      * Defines the title attribute of a subrecod table row (tooltip).

    * Examples::

         SELECT note1 AS 'Comment', note2 AS 'Comment|50' , note3 AS 'title=Comment|width=100|nostrip', note4 AS '50|Comment',
         'checked.png' AS 'Status|icon', email AS 'mailto', CONCAT(homepage, '|Homepage') AS 'url',
         ELT(status,'info','warning','danger') AS '_rowClass', help AS '_rowTitle' ...

* *FormElement.parameter*

  * *form*: Target form, e.g. *form=person*
  * *page*: Target page with detail form. If none specified, use the current page.
  * *title*: Title displayed over the table in the current form.
  * *extraDeleteForm*: Optional. The per row delete Button will reference the form specified here (for deleting) instead of the default (*form*).
  * *detail*: Mapping of values from the primary form to the target form (defined via `form=...`).

    * Syntax::

        <source table column name 1|&constant 1>:<target column name 1>[,<source table column name 2|&constant 2>:<target column name 2>][...]

    * Example: *detail=id:personId,&12:xId,&{{a}}:personId*
    * By default, the given value will overwrite values on the target record. In most situations, this is the wished behaviour.
    * Exceptions of the default behaviour have to be defined on the target form in the corresponding *FormElement* in the
      field *value* by changing the default Store priority definition. E.g. `{{<columnname>:RS0}}` - For existing records,
      the store `R` will provide a value. For new records, store `R` is empty and store S will be searched for a value:
      the value defined in `detail` will be choosen. At last the store '0' is defined as a fallback.
    * *source table column name*: E.g. A person form is opened with person.id=5 (r=5). The definition `detail=id:personId`
      and `form=address` maps person.id to address.personId. On the target record, the column personId becomes '5'.
    * *Constant '&'*: Indicate a 'constant' value. E.g. `&12:xId` or `{{...}}` (all possibilities, incl. further SELECT
      statements) might be used.

Type: time
^^^^^^^^^^

* Range time: '00:00:00' to '23:59:59' or '00:00:00'. (http://dev.mysql.com/doc/refman/5.5/en/datetime.html)
* Optional:
* *FormElement.parameter*
  * *showSeconds*: 0|1 - shows the seconds. Independent if the user specifies seconds, they are displayed '1' or not '0'.
  * *showZero*: 0|1 - For an empty timestamp, With '0' nothing is displayed. With '1' the string '00:00[:00]' is displayed.

Type: upload
^^^^^^^^^^^^

* See: https://www.w3.org/TR/html5/forms.html#file-upload-state-(type=file)

An upload element is based on a 'file browse'-button and a 'trash'-button (=delete). Only one of them is shown at a time.
The 'file browse'-button is displayed, if there is no file uploaded already.
The 'trash'-button is displayed, if there is a file uploaded already.

After clicking on the browse brutton , the user can select a file from the local filesystem.
After choosing the file, the upload starts immediately, shown by a turning wheel. When the server received the whole file
and accepts the file, the 'file browse'-button dissappears and the filename is shown, followed by a 'trash'-button.
Either the user is satisfied now or the user can delete the uploaded file (and maybe upload another one).

Until this point, the file is cached on the server but not copied to the `fileDestination`. The user have to save the
current record, either to finalize the upload or to delete a previous uploaded file.

The FormElement behaves like a 'native FormElement' (showing controls/text on the form) as well as an 'action FormElement'
by fireing queries and doing some additional actions during form save. Inside the *Form editor* it's shown as a 'native FormElement'.

* *FormElement.parameter*:

  * *accept*: `image/*,video/*,audio/*,.doc,.docx,.pdf,<mime type>`

  * *fileDestination*: Destination where to copy the file. A good practice is to specify a relative `fileDestination` -
    such an installation (filesystem and database) are moveable.

    * If the original filename should be part of `fileDestination`, the variable *{{filename}}* (STORE_VARS) can be used. Example ::

        fileDestination={{SELECT 'fileadmin/user/pictures/', p.name, '-{{filename}}' FROM Person AS p WHERE p.id={{id:R0}} }}

      * The original filename will be sanatized: only alnum characters are allowed. German 'umlaut' will be replaced by
        'ae', 'ue', 'oe'. All non valid characters will be replaced by '-'.

    * If a file already exist under `fileDestination`, an error message is shown and 'save' is aborted. The user has no
      possibility to overwrite the already existing file. If the whole workflow is correct, this situation should no
      arise. Check also *fileReplace* below.

    * All necessary subdirectories in `fileDestination` are automatically created.

    * Using the current record id in the `fileDestination`: Using {{r}} is problematic for a 'new' primary record: that
      one is still '0' at the time of saving. Use `{{id:R0}}` instead.

  * *slaveId*, *sqlBefore*, *sqlInsert*, *sqlUpdate*, *sqlDelete*, *sqlUpdate*, *sqlAfter*: Only used in :ref:`Upload advanced mode`.

  * *fileReplace=always*: If `fileDestination` exist - replace it by the new one.

Deleting a record and the referenced file
'''''''''''''''''''''''''''''''''''''''''

If the user deletes a record (e.g. pressing the delete button on a form) which contains reference(s) to files, such files
are deleted too. Slave records, which might be also deleted through a 'delete'-form, are *not* checked for file references
and therefore such files are not deleted on the filesystem.

Only columns where the columname contains `pathFileName` are checked for file references. Therefore, always choose a
columnanme which contains `pathFileName`.

If there are other records, which references the same file, such files are not deleted.
It's a very basic check: just the current column of the current table is compared. In general it's not a good idea to
have mutliple references to a single file. Therefore this check is just a fallback.

.. _Upload simple mode:

Upload simple mode
;;;;;;;;;;;;;;;;;;

Requires: *'upload'-FormElement.name = 'column name'* of an column in the primary table.

After moving the file to `fileDestination`, the current record/column will be updated to `fileDestination`.
The database definition of the named column has to be a string variant (varchar, text but not numeric or else).
On form load, the column value will be displayed as path/filename.
Deleting an uploaded file in the form (by clicking on the trash near beside) will delete
the file on the filesystem as well. The column will be updated to an empty string.

This happens automatically without any further definiton in the 'upload'-FormElement.

Multiple 'upload'-FormElements per form are possible. Each of it needs an own table column.

.. _Upload advanced mode:

Upload advanced mode
;;;;;;;;;;;;;;;;;;;;

Requires: *'upload'-FormElement.name* is unknown as a column in the primary table.

This mode will serve further database structure scenarios.

A typical name for such an 'upload'-FormElement, to show that the name does not exist in the table, might start with 'my', e.g. 'myUpload1'.

* *FormElement.value*: The path/filename, shown during 'form load' to indicate a previous uploaded file, has to be queried
  with this field. E.g.::

      {{SELECT pathFilenamePicture FROM Note WHERE id={{slaveId}} }}

* *FormElement.parameter*:

  * *fileDestination*: determine the path/filename. E.g.::

     fileDestination=fileadmin/person/{{name:R0}}_{{id:R}}/uploads/picture_{{filename}}

  * *slaveId*: Defines the target record where to retrieve and store the path/filename of the uploaded file. Check also :ref:`slave-id`. E.g.::

      slaveId={{SELECT id FROM Note WHERE pId={{id:R0}} AND type='picture' LIMIT 1}}

  * *sqlBefore*: fired during a form save, before the following queries are fired.

  * *sqlInsert*: fired if `slaveId=0` and an upload exist (user has choosen a file)::

      sqlInsert={{INSERT INTO Note (pId, type, pathFileName) VALUE ({{id:R0}}, 'image', '{{fileDestination}}') }}

  * *sqlUpdate*: fired if `slaveId>0` and an upload exist (user has choosen a file). E.g.::

      sqlUpdate={{UPDATE Note SET pathFileName = '{{fileDestination}}' WHERE id={{slaveId}} LIMIT 1}}

  * *sqlDelete*: fired if `slaveId>0` and no upload exist (user has not choosen a file). E.g.::

      sqlDelete={{DELETE FROM Note WHERE id={{slaveId:V}}  LIMIT 1}}

  * *sqlAfter*: fired after all previous queries have been fired. Might update the new created id to a primary record. E.g.::

      sqlUpdate={{UPDATE Person SET noteIdPicture = {{slaveId}} WHERE id={{id:R0}} LIMIT 1 }}



.. _class-action:

Class: Action
-------------

Type: before... | after...
^^^^^^^^^^^^^^^^^^^^^^^^^^

These type of 'action' *FormElements* will be used to implement data validation or creating/updating additional records.

Types:

  * beforeLoad

    * good to grant access permission.

  * afterLoad
  * beforeSave

    * good to prohibit creating of duplicate records.

  * afterSave

    * good to create & update additional records.

  * beforeInsert
  * afterInsert
  * beforeUpdate
  * afterUpdate
  * beforeDelete
  * afterDelete

sqlValidate
'''''''''''

  Perform checks by fireing a SQL query and expecting a predefined number of selected records.

  * OK: the `expectRecords` number of records has been selected. Continue processing the next *FormElement*.
  * Fail: the `expectRecords` number of records has not been selected (less or more): Display the error message
    `messageFail` and abort the whole (!) current form load or save.

  *FormElement.parameter*:

  * *requiredList* - List of `native`-*FormElement* names: only if all of those elements are filled (!=0 and !=''), the *current*
    `action`-*FormElement* will be processed. This will enable or disable the check, based on the user input! If no
    `native`-*FormElement* names are given, the specified check will always be performed.
  * *sqlValidate* - validation query. E.g.: `sqlValidate={{!SELECT id FROM Person AS p WHERE p.name LIKE {{name:F:all}} AND p.firstname LIKE {{firstname:F:all}} }}`

    * Pay attention to `{{!...` after the equal sign.

  * *expectRecords* - number of expected records.

    * *expectRecords* = `0` or *expectRecords* = `0,1` or *expectRecords* = `{{SELECT COUNT(id) FROM Person}}`
    * Separate multiple valid record numbers by ','. If at least one of those matches, the check will pass successfully.

  * *messageFail* - Message to show. E.g.: *messageFail* = `There is already a person called {{firstname:F:all}} {{name:F:all}}`


.. _slave-id:

slaveId
'''''''

*FormElement.parameter*:

  * *slaveId*:

    * Auto fill: name the action `action`-*FormElement* equal to an existing column (table from the current form definition).
      *slaveId* will be automatically filled with the value of the named column.

      * If there is no such named columnname, set *slaveId* = `0`.

    * Explicit definition: *slaveId* = `123` or *slaveId* = `{{SELECT id ...}}`

Note:

  * `{{slaveId}}` can be used in any query of the current *FormElement*.
  * If the `action`-*FormElement* name exist as a column in the master record: Update that column *automatically* with the
    recent slaveId
  * After an INSERT the `last_insert_id()` becomes the *slaveId*).

sqlBefore / sqlInsert / sqlUpdate / sqlDelete / sqlAfter
''''''''''''''''''''''''''''''''''''''''''''''''''''''''

  * Save values of a form to different record(s), optionally on different table(s).
  * Typically useful on 'afterSave' - be careful when using it earlier, e.g. beforeLoad.

*FormElement.parameter*:

  * *requiredList* - List of `native`-*FormElement*: only if all of those elements are filled, the current
    `action`-*FormElement* will be processed.

  * *sqlBefore*: always fired (before any *sqlInsert* or *sqlUpdate*)
  * *sqlInsert*: fired if *slaveId* = `0` or *slaveId* = `''`.
  * *sqlUpdate*: fired if *slaveId* > `0`:
  * *sqlDelete*: always fired (after *sqlInsert* or *sqlUpdate*) - the definition, when this query is fired, might change in the future.
  * *sqlAfter*: always fired (after *sqlInsert*, *sqlUpdate* or *sqlDelete*).

Example
'''''''

Situation 1: master.xId=slave.id (1:1)

 * Name the action element 'xId': than {{slaveId}} will be automatically set to the value of 'master.xId'

   * {{slaveId}} == 0 ? 'sqlInsert' will be fired.
   * {{slaveId}} != 0 ? 'sqlUpdate' will be fired.

 * In case of fireing 'sqlInsert', the 'slave.id' of the new created record are copied to master.xId (the database will
     be updated automatically).

 * If the automatic update of the master record is not suitable, the action element should have no name or a name
     which does not exist as a column of the master record. Define  `slaveId={{SELECT id ...}}`

Situation 2: master.id=slave.xId (1:n)

 * Name the action element different to any columnname of the master record (or no name).
 * Determine the slaveId: `slaveId={{SELECT id FROM slave WHERE slave.xxx={{...}} LIMIT 1}}`

   * {{slaveId}} == 0 ? 'sqlInsert' will be fired.
   * {{slaveId}} != 0 ? 'sqlUpdate' will be fired.


Type: sendmail
^^^^^^^^^^^^^^

* Send mail(s) will be processed after:

   * saving the record ,
   * processing all uploads,
   * processing `afterSave` action `FormElements`.


* *FormElement.value*: Body of the email.

* *FormElement.parameter*:

  * *sendMailTo* - Comma-separated list of receiver email addresses. Optional: 'realname <john@doe.com>. If there
    is no recipient email address, *no* mail will be sent.
  * *sendMailCc* - Comma-separated list of receiver email addresses. Optional: 'realname <john@doe.com>.
  * *sendMailBcc* - Comma-separated list of receiver email addresses. Optional: 'realname <john@doe.com>.
  * *sendMailFrom* - Sender of the email. Optional: 'realname <john@doe.com>'. **Mandatory**.
  * *sendMailSubject* - Subject of the email.
  * *sendMailReplyTo* - Reply this email address. Optional: 'realname <john@doe.com>'.
  * *sendMailFlagAutoSubmit* - **on|off** - If 'on' (default), the mail contains the header
    'Auto-Submitted: auto-send' - this suppress a) OoO replies, b) forwarding of emails.
  * *sendMailGrId* - Will be copied to the mailLog record. Helps to setup specific logfile queries.
  * *sendMailXId* - Will be copied to the mailLog record. Helps to setup specific logfile queries.

* To use values of the submitted form, use the STORE_FORM. E.g. `{{name:F:allbut}}`
* To use the `id` of a new created or already existing one, use the STORE_RECORD. E.g. `{{id:R}}`



.. _dynamic-update:

Dynamic Update
--------------

The 'Dynamic Update' feature makes a form more interactive. If a user change a *FormElement* who is tagged with
'dynamicUpdate', *all* elements who are tagged with 'DynamicUpdate', will be recalculated and rerendered.

The following fields will be recalculated during 'Dynamic Update'

* 'modeSql' - Possible values: 'show', 'required', 'readonly', 'hidden'
* 'value'
* 'parameter.*' - especially 'itemList'
* 'note'
* 'label'

To make a form dynamic:

* Mark all *FormElements* with `dynamic update`=`enabled`, which **initiates** or **receives** updates.
* Define the receiving *FormElements* in a way, that they will interpret the recent user change. The form variable of the
  specific sender *FormElement* `{{<sender element>:F:<sanitize>}}` should be part of one of the above fields to get an
  impact. E.g.:
  ::

    [receiving *FormElement*].parameter: itemList={{ SELECT IF({{carPriceRange:FE:alnumx}}='expensive','Ferrari,Tesla,Jaguar','General Motors,Honda,Seat,Fiat') }}

Examples
^^^^^^^^

* Master FormElement 'music' is a radio/enum of 'classic', 'jazz', 'pop'.

Content of a select list
''''''''''''''''''''''''

* Slave FormElement 'interpret' is 'select'-list, depending of 'music'

::

   sql={{!SELECT name FROM interpret WHERE music={{music:FE:alnumx}} ORDER BY name}}

Show / Hide a *FormElement*
'''''''''''''''''''''''''''

* Slave 'interpret' is displayed only for 'pop':

::

   modeSql={{SELECT IF( '{{music:FR:alnumx}}'='pop' ,'show', 'hidden' }}


.. _form-layout:

Form Layout
-----------

The forms will be rendered with Bootstrap CSS classes, based on the 12 column grid model (Bootstrap 3.x).
Generally a 3 column layout for *label* columns on the left side, an *input* field column in the middle and a *note*
column on the right side will be rendered.

The used default column (=bootstrap grid) width is *3,6,3* for *label, input, note*.

* The system wide default can be changed via config.qfq.ini :ref:`config-qfq-ini` - the new settings are the default
  settings for all forms.
* Per *Form* settings can be done in the *Form* parameter field. They overwrite the system wide default.
* Per *FormElement* settings can be done in the *FormElement* parameter field. They overwrite the *Form* setting.

A column will be switched off (no wrapping via `<div class='col-md-?>`) by setting a `0` on the respective column.

Custom field width
^^^^^^^^^^^^^^^^^^

Per *FormElement* set `BS Label Columns`, `BS Input Columns` or `BS Note Columns` to customize an individual width.
The sum of these three columns should always be 12.

Multiple Elements per row
^^^^^^^^^^^^^^^^^^^^^^^^^

Every row is by default wrapped in a `<div class='form-group'>` and every column is wrapped in a `<div class='col-md-?>`.
To display multiple input elements in one row, the wrapping of the *FormElement* row and of the three columns can be
customized via the checkboxes of `Label / Input / Note`. Every open and every close tag can be individually switched on
or off.

E.g. to display 2 *FormElements* in a row with one label (first *FormElement*) and one note (last *FormElement*) we need
the following (switch off all non named):

* First *FormElement*

  * open row tag: `row` ,
  * open and close label tag: `label`, `/label`,
  * open and close field tag: `input`, `/input`,

* Second *FormElement*

  * open and close field tag: `input`, `/input`,
  * open and close note tag: `note`, `/note`,
  * close row tag: `/row` ,


Best practice
-------------

Central configured values
^^^^^^^^^^^^^^^^^^^^^^^^^

Any variable in *config.qfq.ini* can be used by *{{<varname>:Y}}* in form or report statements.

E.g.

  TECHNICAL_CONTACT = jane.doe@example.net

Could be used in an *FormElement.type* = sendmail with *parameter*  setting *sendMailFrom={{TECHNICAL_CONTACT:Y}}*.

Debug Report
^^^^^^^^^^^^

Writing "report's" in the nested notation or long queries broken over several lines, might not interpreted as wished.
Best for debugging is to specify in the tt-content record::

  debugShowBodyText = 1

Note: Debug information is only display if it's enabled in  *config.ini* by
 * *SHOW_DEBUG_INFO=yes* or
 * *SHOW_DEBUG_INFO=auto* and logged in in the same Browser as a Typo3 backend user.

More detailed error messages
^^^^^^^^^^^^^^^^^^^^^^^^^^^^

If *SHOW_DEBUG_INFO* is enabled, a full stacktrace and variable contents are displayed in case of an error.

Person search form
^^^^^^^^^^^^^^^^^^

QFQ content record::

  # Creates a small form that redirects back to this page
  10 {
    sql = SELECT '_'
    head = <form action='#' method='get'><input type='hidden' name='id' value='{{pageId:T}}'>Search: <input type='text' name='search' value='{{search:CE:all}}'><input type='submit' value='Submit'></form>
  }

  # SQL statement will find and list all the relevant forms
  20 {
    sql = SELECT CONCAT('?detail&form=form&r=', f.id) AS _Pagee, f.id, f.name, f.title
              FROM Form AS f
              WHERE f.name LIKE  '%{{search:CE:all}}%'
    head = <table class='table'>
    tail = </table>
    rbeg = <tr>
    rend = </tr>
    fbeg = <td>
    fend = </td>
  }


Form: compute next free 'ord' automatically
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Requirement: new records should automatically get the highest number plus 10 for their 'ord' value. Existing records
should not be altered.

Version 1
'''''''''

Compute the next 'ord' in advance in the subrecord field of the primary form. Submit that value to the new record
via SIP parameter to the secondary form.

On the secondary form: for 'new' records choose the computed value, for existing records leave the value
unchanged.

* Primary form, `subrecord` *FormElement*, field `parameter`: set ::

    detail=id:formId,{{SELECT '&', IFNULL(fe.ord,0)+10 FROM Form AS f LEFT JOIN *FormElement* AS fe ON fe.formId=f.id WHERE
    f.id={{r:S0}} ORDER BY fe.ord DESC LIMIT 1}}:ord


* Secondary form, `ord` *FormElement*, field `value`: set

  ::

   `{{RS0}}`.

Version 2
'''''''''

Compute the next 'ord' as default value direct inside the secondary form. No change is needed for the primary form.

* Secondary form, `ord` *FormElement*, field `value`: set `{{SELECT IF({{ord:R0}}=0,  MAX(IFNULL(fe.ord,0))+10,{{ord:R0}})  FROM (SELECT 1) AS a LEFT JOIN FormElement AS fe ON fe.formId={{formId:S0}} GROUP BY fe.formId}}`.

Form: Person Wizard - firstname, city
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Requirement: A form that displays the column 'firstname' from table 'Person' and 'city' from table 'Address'. If the
records not exist, the form should create it.

Form primary table: Person

Form slave table: Address

Relation: `Person.id = Address.personId`

* Form: wizard

  * Name: wizard
  * Title: Person Wizard
  * Table: Person
  * Render: bootstrap

* *FormElement*: firstname

  * Class: **native**
  * Type: **text**
  * Name: firstname
  * Label: Firstname

* *FormElement*: email, text, 20

  * Class: **native**
  * Type: **text**
  * Name: city
  * Label: City
  * Value: `{{SELECT city FROM Address WHERE personId={{r}} ORDER BY id LIMIT 1}}`

* *FormElement*: insert/update address record

  * Class: **action**
  * Type: **afterSave**
  * Label: Manage Address
  * Parameter:

    * `slaveId={{SELECT id FROM Address WHERE personId={{r}} ORDER BY id LIMIT 1}}`
    * `sqlInsert={{INSERT INTO Address (personId, city) VALUES ({{r}}, '{{city:F:allbut:s}}') }}`
    * `sqlUpdate={{UPDATE Address SET city='{{city:F:allbut:s}}' WHERE id={{slaveId:V}} }}`
    * `sqlDelete={{DELETE FROM Address WHERE id={{slaveId:V}} AND ''='{{city:F:allbut:s}}' LIMIT 1}}`

Form: Person Wizard - firstname, single note
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Requirement: A form that displays the column 'firstname' from table 'Person' and 'note' from table 'Note'.
If the records don't exist, the form should create it.
Column Person.noteId points to Note.id

Form primary table: Person

Form slave table: Address

Relation: `Person.id = Address.personId`

* Form: wizard

  * Name: wizard
  * Title: Person Wizard
  * Table: Person
  * Render: bootstrap

* *FormElement*: firstname

  * Class: **native**
  * Type: **text**
  * Name: firstname
  * Label: Firstname

* *FormElement*: email, text, 20

  * Class: **native**
  * Type: **text**
  * Name: note
  * Label: Note
  * Value: `{{SELECT Note FROM Note AS n, Person AS p WHERE p.id={{r}} AND p.noteId=n.id ORDER BY id }}`

* *FormElement*: insert/update address record

  * Class: **action**
  * Type: **afterSave**
  * Name: noteId
  * Label: Manage Note
  * Parameter:

    * `sqlInsert={{INSERT INTO Note (note) VALUES ('{{note:F:allbut:s}}') }}`
    * `sqlUpdate={{UPDATE Note SET note='{{note:F:allbut:s}}' WHERE id={{slaveId:V}} }}`

Icons Template Group
^^^^^^^^^^^^^^^^^^^^

 * FormElement.parameter

::

     tgAddClass=btn alert-success
     tgAddText=<span class="glyphicon glyphicon-plus" aria-hidden="true"></span>
     tgRemoveClass=btn btn-danger alert-danger
     tgRemoveText=<span class="glyphicon glyphicon-remove" aria-hidden="true"></span>

Chart
^^^^^

* QFQ delivers a chart JavaScript lib: https://github.com/nnnick/Chart.js.git. Docs: http://www.chartjs.org/docs/
* The library is not sourced in the HTML page automatically. To do it, either include the lib
  `typo3conf/ext/qfq/Resources/Public/JavaScript/Chart.min.js`:

  * in the specific tt_content record (shown below in the example) or
  * system wide via Typo3 Template record.

* By splitting HTML and JavaScript code over several lines, take care not accidently to create a 'nesting'-end token.
  Check the line after `10.tail =`. It's '}' alone on one line. This is a valid 'nesting'-end token!. There are two options
  to circumvent this:

  * Don't nest the HTML & JavaScript code - bad workaround, this is not human readable.
  * Select different nesting token, e.g. '<' / '>' (check the first line on the following example).

::

     # <

     10.sql = SELECT '_'
     10.head =
       <div style="height: 1024px; width: 640px;">
         <h3>Distribution of FormElement types over all forms</h3>
         <canvas id="barchart" width="1240" height="640"></canvas>
       </div>
       <script src="typo3conf/ext/qfq/Resources/Public/JavaScript/Chart.min.js"></script>
       <script>
         $(function () {
           var ctx = document.getElementById("barchart");
           var barChart = new Chart(ctx, {
             type: 'bar',
               data: {

     10.tail =
               }
           });
         });
       </script>

     # Labels
     10.10 <
       sql = SELECT "'", fe.type, "'" FROM FormElement AS fe GROUP BY fe.type ORDER BY fe.type
       head = labels: [
       tail = ],
       rsep = ,
     >

     # Data
     10.20 <
       sql = SELECT COUNT(fe.id) FROM FormElement AS fe GROUP BY fe.type ORDER BY fe.type
       head = datasets: [ {   data: [
       tail = ],  backgroundColor: "steelblue", label: "FormElements" } ]
       rsep = ,
     >

Upload Form Simple
^^^^^^^^^^^^^^^^^^

Table Person

+---------------------+--------------+
| Name                | Type         |
+=====================+==============+
| id                  | int          |
+---------------------+--------------+
| name                | varchar(255) |
+---------------------+--------------+
| pathFileNamePicture | varchar(255) |
+---------------------+--------------+
| pathFileNameAvatar  | varchar(255) |
+---------------------+--------------+

* Form:

  * Name: UploadSimple
  * Table: Person

* FormElements:

  * Name: name

    * Type: text
    * Label: Name

  * Name: pathFileNamePicture

    * Type: upload
    * Label: Picture
    * Parameter::

        fileDestination=fileadmin/user/{{id:R0}}-picture-{{filename}}

  * Name: pathFileNameAvatar

    * Type: upload
    * Label: Avatar
    * Parameter::

        fileDestination=fileadmin/user/{{id:R0}}-avatar-{{filename}}


Upload Form Advanced 1
^^^^^^^^^^^^^^^^^^^^^^

Table: Person

 +---------------------+--------------+
 | Name                | Type         |
 +=====================+==============+
 | id                  | int          |
 +---------------------+--------------+
 | name                | varchar(255) |
 +---------------------+--------------+

Table: Note

 +---------------------+--------------+
 | Name                | Type         |
 +=====================+==============+
 | id                  | int          |
 +---------------------+--------------+
 | pId                 | int          |
 +---------------------+--------------+
 | type                | varchar(255) |
 +---------------------+--------------+
 | pathFileName        | varchar(255) |
 +---------------------+--------------+

* Form:

  * Name: UploadAdvanced1
  * Table: Person

* FormElements

  * Name: name

    * Type: text
    * Label: Name

  * Name: mypathFileNamePicture

    * Type: upload
    * Label: Picture
    * Value: {{SELECT pathFileName FROM Note WHERE id={{slaveId}} }}
    * Parameter::

        fileDestination=fileadmin/user/{{id:R0}}-picture-{{filename}}
        slaveId={{SELECT id FROM Note WHERE pId={{id:R0}} AND type='picture' LIMIT 1}}
        sqlInsert={{INSERT INTO Note (pathFileName, type, pId) VALUE ('{{fileDestination}}', 'picture', {{id:R0}}) }}
        sqlUpdate={{UPDATE Note SET pathFileName = '{{fileDestination}}' WHERE id={{slaveId}} LIMIT 1}}
        sqlDelete={{DELETE FROM Note WHERE id={{slaveId}}  LIMIT 1}}

  * Name: mypathFileNameAvatar

    * Type: upload
    * Label: Avatar
    * Value: {{SELECT pathFileName FROM Note WHERE id={{slaveId}} }}
    * Parameter::

        fileDestination=fileadmin/user/{{id:R0}}-avatar-{{filename}}
        slaveId={{SELECT id FROM Note WHERE pId={{id:R0}} AND type='avatar' LIMIT 1}}
        sqlInsert={{INSERT INTO Note (pathFileName, type, pId) VALUE ('{{fileDestination}}', 'avatar', {{id:R0}}) }}
        sqlUpdate={{UPDATE Note SET pathFileName = '{{fileDestination}}' WHERE id={{slaveId}} LIMIT 1}}
        sqlDelete={{DELETE FROM Note WHERE id={{slaveId}}  LIMIT 1}}

Upload Form Advanced 2
^^^^^^^^^^^^^^^^^^^^^^

Table: Person

 +---------------------+--------------+
 | Name                | Type         |
 +=====================+==============+
 | id                  | int          |
 +---------------------+--------------+
 | name                | varchar(255) |
 +---------------------+--------------+
 | noteIdPicture       | int          |
 +---------------------+--------------+
 | noteIdAvatar        | int          |
 +---------------------+--------------+

Table: Note

 +---------------------+--------------+
 | Name                | Type         |
 +=====================+==============+
 | id                  | int          |
 +---------------------+--------------+
 | pathFileName        | varchar(255) |
 +---------------------+--------------+

* Form:

  * Name: UploadAdvanced2
  * Table: Person

* FormElements

  * Name: name

    * Type: text
    * Label: Name

  * Name: mypathFileNamePicture

    * Type: upload
    * Label: Picture
    * Value: {{SELECT pathFileName FROM Note WHERE id={{slaveId}} }}
    * Parameter::

        fileDestination=fileadmin/user/{{id:R0}}-picture-{{filename}}
        slaveId={{SELECT id FROM Note WHERE id={{noteIdPicture}} LIMIT 1}}
        sqlInsert={{INSERT INTO Note (pathFileName) VALUE ('{{fileDestination}}') }}
        sqlUpdate={{UPDATE Note SET pathFileName = '{{fileDestination}}' WHERE id={{slaveId}} LIMIT 1}}
        sqlDelete={{DELETE FROM Note WHERE id={{slaveId}}  LIMIT 1}}
        sqlAfter={{UPDATE Person SET noteIdPicture={{slaveId}} WHERE id={{id:R0}} LIMIT 1

  * Name: mypathFileNameAvatar

    * Type: upload
    * Label: Avatar
    * Value: {{SELECT pathFileName FROM Note WHERE id={{slaveId}} }}
    * Parameter::

        fileDestination=fileadmin/user/{{id:R0}}-avatar-{{filename}}
        slaveId={{SELECT id FROM Note WHERE id={{noteIdAvatar}} LIMIT 1}}
        sqlInsert={{INSERT INTO Note (pathFileName) VALUE ('{{fileDestination}}') }}
        sqlUpdate={{UPDATE Note SET pathFileName = '{{fileDestination}}' WHERE id={{slaveId}} LIMIT 1}}
        sqlDelete={{DELETE FROM Note WHERE id={{slaveId}}  LIMIT 1}}
        sqlAfter={{UPDATE Person SET noteIdAvatar={{slaveId}} WHERE id={{id:R0}} LIMIT 1

FAQ
---

 * Q: A variable {{<var>}} is shown as empty string, but there should be a value.

   * A: The sanatize rule is violeted and therefore the value has been removed. Set {{<var>:<store>:all}} as a test.
     Only STORE_CLIENT and STORE_FORM will be sanatized.


Report
======

The QFQ extension is activated through tt-content records. One or more tt-content records per page are necessary to render
*forms* and *reports*.

QFQ content element
-------------------

QFQ is used by configuring Typo3 content elements. Insert one or more QFQ content elements on a Typo3 page.
Specify column and language per content record as wished.

The title of the QFQ content element will not be rendered. It's only visible in the backend for orientation.

General
-------

To display a report on any given TYPO3 page, create a content element of type 'QFQ Element' (plugin) on that page.

A simple example
^^^^^^^^^^^^^^^^

Assume that the database has a table person with columns firstName and lastName. To create a simple list of all persons, we can do the following:
::

    10.sql = SELECT id AS pId, CONCAT(firstName, " ", lastName, " ") AS name FROM person

10 Stands for a *root level* of the report (see section `Structure`_). 10.sql defines a SQL query for this specific level. When the query is executed it will return a result having one single column name containing first and last name
separated by a space character.

The HTML output displayed on the page resulting from only this definition could look as follows:
::

    John DoeJane MillerFrank Star

..



I.e., QFQ will simply output the content of the SQL result row after row for each single level.

However, we can modify (wrap) the output by setting the values of various keys for each level: 10.rsep=<br/> for example tells QFQ to seperate the rows of the result by a HTML-line break. The final result in this case is:

::

    10.sql = SELECT id AS personId, CONCAT(firstName, " ", lastName, " ") AS name FROM person
    10.sep = <br>

HTML output:
::

    John Doe<br>Jane Miller<br>Frank Star

..

Syntax
------

    All **root level queries** will be fired in the order specified by 'level' (Integer value).

    For **each** row of a query (this means *all* queries), all subqueries will be fired once.

    *   E.g. if the outer query selects 5 rows, and a nested query always select 3 rows, than the total number of rows are 5 x 3 = 15 rows.

    There is a set of **variables** that will get replaced before the SQL-Query gets executed:

        Column values of the recent rows: {{<level>.<columnname>}}

        Global variables: {{global.<name>}}

        Variables from specific stores: {{<name>[:<store/s>[:<sanitize class>]]}}

        Current row index: {{<level>.line.count}}

        Total rows (num_rows for SELECT and SHOW, affected_rows for UPDATE and INSERT): {{<level>.line.total}}

        Last insert id for INSERT: {{<level>.line.insertId}}

        See :ref:`variables` for a full list of all available variables.

    Be aware that line.count / line.total have to be known before the query is fired. E.g. `10.sql = SELECT {{10.line.count}}, ... WHERE {{10.line.count}} = ...`
    won't work as expected. `{{10.line.count}}` can't be replaced before the query is fired, but will be replaced during processing the result!


    Different types of SQL queries are possible: SELECT, INSERT, UPDATE, DELETE, SHOW

    Only SELECT and SHOW queries will fire subqueries.

    *   Processing of the resulting rows and columns:

    *   In general, all columns of all rows will be printed out sequentially.

        On a per column base, printing of columns can be suppressed. This might be useful to select values which will be
        accessed later on in another query via the {{level.columnname}} variable. To suppress printing of a column, use a
        underscore as column name prefix.

        Reserved column names have a special meaning and will be processed in a special way. See `Processing of columns in the SQL result`_ for details.

        There are extensive ways to wrap columns and rows automatically. See :ref:`wrapping-rows-and-columns`

Debug the bodytext
------------------
The parsed bodytext could be displayed by activating 'showDebugInfo' (:ref:`debug`) and specifying

::

    debugShowBodyText = 1

A small symbol with a tooltip will be shown, where the content record will be displayed on the webpage.
Note: :ref:`debug` information will only be shown with *showDebugInfo=yes* in config.ini .

Structure
---------

A report can be divided into several levels. This can make report definitions more readable because it allows for
splitting of otherwise excessively long SQL queries. For example, if your SQL query on the root level selects a number
of person records from your person table, you can use the SQL query on the second level to look up the city where each person lives.

See the example below:

::

    10.sql = SELECT id AS _pId, CONCAT(firstName, " ", lastName, " ") AS name FROM person
    10.rsep = <br />

    10.10.sql = SELECT CONCAT(postal_code, " ", city) FROM address WHERE pId = {{10.pId}}
    10.10.rbeg = (
    10.10.rend = )

..

This would result in

::

    John Doe (3004 Bern)
    Jane Miller (8008 Zürich)
    Frank Star (3012 Bern)

..

Text across several lines
^^^^^^^^^^^^^^^^^^^^^^^^^

To make SQL queries, or QFQ records in general, more readable, it's possible to split a line across several lines. Lines
with keywords are on their own (`QFQ Keywords (Bodytext)`_ start a new line). If a line is not a 'keyword' line, it will
be appended to the last keyword line. 'Keyword' lines are detected on:

 * <level>.<keyword> =
 * {
 * <level>[.<level] {

Example::

    10.sql = SELECT 'hello world'
             FROM mastertable
    10.tail = End

    20.sql = SELECT 'a warm welcome'
               'some additional', 'columns'
               FROM smartTable
               WHERE id>100

    20.head = <h3>
    20.tail = </h3>

Nesting of levels
^^^^^^^^^^^^^^^^^

Levels can be nested. E.g.: ::

  10 {
    sql = SELECT ...
    5 {
        sql = SELECT ...
        head = ...
    }
  }

This is equal to: ::

  10.sql = SELECT ...
  10.5.sql = SELECT ...
  10.5.head = ...

By default, curly braces '{}' are used for nesting. Alternatively angle braces '<>', round braces '()' or square
braces '[]' are also possible. To define the braces to use, the **first line** of the bodytext has to be a comment line and the
last character of that line must be one of '{}[]()<>'. The corresponding braces are used for that QFQ record. E.g.: ::

    # Specific code. >
    10 <
      sql = SELECT
      head = <script>
             data = [
               {
                 10, 20
               }
             ]
             </script>
    >


Per QFQ tt-content record, only one type of nesting braces can be used.

Be careful to:

* write nothing else than whitespaces/newline behind an **open brace**
* the **closing brace** has to be alone on a line. ::

   10.sql = SELECT 'hello world'

   20 {
         sql = SELECT 'a new query'
         head = <h1>
         tail = </h1>
   }

   30 {
         sql = SELECT 'a third query'
         head = <h1>
         tail = </h1>
         40 {
               sql = SELECT 'a nested nested query'
         }
   }

   30.40.tail = End

   50

   {
          sql = SELECT 'A query with braces on their own'
   }


Access to upper column values
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Columns of the upper level result can be accessed via variables, eg. {{10.pId}} will be replaced by the value in the pId column.

+-------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|**Levels**   |A report is divided into levels. Example 1 has 3 levels **10**, **20.25**, **20.25.10**                                                                                                                                      |
+-------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|**Qualifier**|A level is divided into qualifiers **20.30.10** has 3 qualifiers **20**, **30**, **10**                                                                                                                                      |
+-------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|**Root       |Is a level with one qualifier. E.g.: 10                                                                                                                                                                                      |
|levels**     |                                                                                                                                                                                                                             |
+-------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|**Sub        |Is a level with more than one qualifier. E.g. levels **20.25** and **20.30.10**                                                                                                                                              |
|levels**     |                                                                                                                                                                                                                             |
+-------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|**Child**    |The level **20** has one child **20.25**                                                                                                                                                                                     |
+-------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|**Parent**   |The level 20.25 has a parent **20**                                                                                                                                                                                          |
+-------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|**Example    |**10** and **20** are root level and will be executed independently. **10** don't have a sub level. **20.25** will be executed as many times as **20** has row numbers. **20.30.10** won't be executed because there isn't   |
|explanation**|any **20.30** level                                                                                                                                                                                                          |
+-------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+


Report Example 1:

::


    # Displays current date
    10.sql = SELECT CURDATE()

    # Show all students from the person table
    20.sql = SELECT p.id AS pId, p.firstName, " - ", p.lastName FROM person AS p WHERE p.typ LIKE "student"

    # Show all the marks from the current student ordered chronological
    20.25.sql = SELECT e.mark FROM exam AS e WHERE e.pId={{20.pId}} ORDER BY e.date

    # This query will never be fired, cause there is no direct parent called 20.30.
    20.30.10.sql = SELECT 'never fired'

.. _wrapping-rows-and-columns:

Wrapping rows and columns: Level keys
-------------------------------------

Order and nesting of queries, will be defined with a typoscript-like syntax: level.sublevel1.subsublevel2. ...
Each 'level' directive needs a final key, e.g: 20.30.10. **sql**. A key **sql** is necessary in order to process a level.
All `QFQ Keywords (Bodytext)`_.

Processing of columns in the SQL result
---------------------------------------

* The content of all columns of all rows will be printed sequentially, without separator.
* Rows with `Special column names`_  will be processed in a special way.

Special column names
--------------------

* Special column names always start with '_'.
* Column names, which start with a '_' and which are not reserved (=special column name), will not be printed. Nevertheless,
  access to it via the {{<level>.<column>}} variable (without '_') are possible.
* The input parameters for the processing function are stored as column values.
* Single parameters are delimited by the '|' character.
* Parameters are identified by the function either

  * by their **order**
  * or by a **one character qualifier** followed by the ':' character, placed in front of the actual parameter value.

+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Reserved column name   | Purpose                                                                                                                                                                                     |
+========================+=============================================================================================================================================================================================+
|_link                   |Easily create links with different features.                                                                                                                                                 |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|_mailto                 |Quickly create email links. A click on the link will open the default mailer. The address is encrypted via JS against email bots.                                                            |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|_pageX or _PageX        |Shortcut version of the link interface for fast creation of internal links. The column name is composed of the string *page*/*Page* and a optional character to specify the type of the link.|
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|_sendmail               |Send emails.                                                                                                                                                                                 |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|_exec                   |Run batch files or executables on the webserver.                                                                                                                                             |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|_vertical               |Render Text vertically. This is useful for tables with limited column width.                                                                                                                 |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|_img                    |Display images.                                                                                                                                                                              |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|_bullet                 |Display a blue/gray/green/pink/red/yellow bullet. If none color specified, show nothing                                                                                                      |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|_check                  |Display a blue/gray/green/pink/red/yellow checked sign. If none color specified, show nothing                                                                                                |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|_<nonReservedName>      |Suppress output. Column names with leading underscore are used to select data from the database and make it available in other parts of the report without generating any output.            |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

.. _column-link:

Column: _link
^^^^^^^^^^^^^

{{url | display | **i (internal)**, e(external) | **- (same)**,n (new), p (parent), t(top) | **-**, (e(edit), c(copy), n(new), d(delete), i(insert) , f(file)) }}

* Most URLs will be rendered via class link.
* Column names like `_pagee`, `_mailto`, ... are wrapper to class link.
* The parameters for link contains a prefix to make them position-independet.

+---+---+--------------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|URL|IMG|Meaning       |Qualifier                          |Example                    |Description                                                                                                                             |
+===+===+==============+===================================+===========================+========================================================================================================================================+
|x  |   |URL           |u:<url>                            |u:http://www.example.com   |If an image is specified, it will be rendered inside the link, default link class: external                                             |
+---+---+--------------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|x  |   |Mail          |m:<email>                          |m:info@example.com         |Default link class: email                                                                                                               |
+---+---+--------------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|x  |   |Page          |p:<pageId>                         |p:impressum                |Prepend '?' or '?id=', no hostname qualifier (automatically set by browser), default link class: internal, default value: {{pageId}}    |
+---+---+--------------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|   |   |Text          |t:<text>                           |t:Firstname Lastname       |-                                                                                                                                       |
+---+---+--------------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|   |   |Render        |r:<mode>                           |r:[0-5]                    |See: `render-mode`_, Default: 0                                                                                                         |
+---+---+--------------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|   |x  |Picture       |P:<filename>                       |P:bullet-red.gif           |Picture '<img src="bullet-red.gif"alt="....">', default link class: internal.                                                           |
+---+---+--------------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|   |x  |Edit          |E                                  |E                          |Show 'edit' icon as image                                                                                                               |
+---+---+--------------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|   |x  |New           |N                                  |N                          |Show 'new' icon as image                                                                                                                |
+---+---+--------------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|   |x  |Delete        |D                                  |D                          |Show 'delete' icon as image (only the icon, no database record 'delete' functionality)                                                  |
+---+---+--------------+-----------------------------------+---------------------------+-----------------------------------------------------------------------------