Index.rst

.. ==================================================
.. FOR YOUR INFORMATION
.. --------------------------------------------------
.. -*- coding: utf-8 -*- with BOM.

.. include:: ../Includes.txt


.. _users-manual:

Users manual
============

The QFQ extension is activated through tt-content records. One or more tt-content records per page are necessary to render
*forms*, *reports* (exports) or to perform *delete* and *save* commands submitted by a QFQ form.


Features not implemented yet
----------------------------

* Multi Forms
* File upload
* FormElement:

  * type=action (especially not *addNupdate*)
  * field dependencies (activating a parent element, activates child elements and vice versa)
  * Checkbox: some combinations not tested.

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.


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}} }}** |
 +-----------------+---------------------------------------------------------------------------------+
 | <level>.db      | Select a DB. Only necessary if a different than the standard DB should be used. |
 +-----------------+---------------------------------------------------------------------------------+
 | <level>.debug   | Debug Level for *report*                                                        |
 +-----------------+---------------------------------------------------------------------------------+
 | <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                           |
 +-----------------+---------------------------------------------------------------------------------+

Debug
^^^^^

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

  * 'yes':

    * Show tooltips in forms filled with decoded SIP.
    * Shows 'Edit form' button in every form.

  * 'no': No debug info rendered in the output.

  * 'auto':

    * checks if there is a Typo3 BE Session.

      * yes: *SHOW_DEBUG_INFO = 'yes'*
      * no: *SHOW_DEBUG_INFO = 'no'*

Form
----

* Forms will be created by using the *Form editor* (HTML form). The Formeditor itself consist of two regular 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:

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

    * The form will create necessary SQL commands for insert, update and delete automatically.

  * *Advanced* form: the form acts on one record, 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.

.. _variables:

Variable (incl. mixed SQL Statement)
------------------------------------

Most fields of a form 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>]]}}*

* Example:

  *{{recordid}}*

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

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

  *{{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.
*   sdkf
* 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, an exception is thrown.

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}}*

  * **alnumx**: [A-Za-z][0-9]@-_.,;: /()
  * **digit**: [0-9].-+
  * **email**: [a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}
  * **min|max**: only usable in forms. Compares the value against an lower and upper limit (numeric or string).
  * **min|max date**:  only usable in forms. Compares the value against an lower and upper date or datetime.
  * **pattern**:  only usable in forms. Compares the value against a regexp.
  * **all**: no sanitizing


Store / prio
------------

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

 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 |Name |Description                                                                             | Content                                                                    |
 +=====+========================================================================================+============================================================================+
 | F   | Form: data not saved in database yet.                                                  | All native form elements. Recent values from the Browser.                  |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | S   | SIP: Client parameter 's' will indicate the current SIP, which will be loaded from the | sip, r (record_id), form                                                   |
 |     | SESSION repo to the SIP-Store.                                                         |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | R   | Record - the record that is going to be edited. For new records: empty.                | 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   | The *table.column* specified *default value*.                                          |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | M   | The *table.column* specified *type*                                                    |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | C   | Client: POST variable, if not found: GET variable                                      | Parameter sent from the Client (=Browser).                                 |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | T   | Typo3: a) Bodytext (ttcontent record), b) Typo3 internal varibles like fe_user_uid, ...| See Typo3 tt_content record configuration                                  |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | 0   | Value: 0, might be helpful if variable is empty but used in an SQL statement, which    | All possible keys                                                          |
 |     | might produce a SQL error otherwise if substituted with an empty string                |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+
 | Y   | System: a) Database credentials, b) helper vars for logging/debugging:                 |                                                                            |
 |     | SYSTEM_SQL_RAW ... SYSTEM_FORM_ELEMENT_COLUMN                                          |                                                                            |
 +-----+----------------------------------------------------------------------------------------+----------------------------------------------------------------------------+

* Default *<prio>*: *FSRD* - Form / SIP / Record / 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: *CLIENT* - C
^^^^^^^^^^^^^^^^^^^

 +---------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | 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                                                                                               |
 +---------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | pageId        | current T3 page Id                                                                                                                       |
 +---------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | pageType      | T3 GET Parameter 'type'                                                                                                                  |
 +---------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | pageLanguage  | T3 GET Parameter 'L'                                                                                                                     |
 +---------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | 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                                                                                                              |
 +---------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | random        | random string with length of 32 chars, alphanum                                                                                          |
 +---------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | ANREDE        | *{{sex}}* == male >> Sehr geehrter Herr, *{{sex}}* == female  Sehr geehrte Frau                                                          |
 +---------------+------------------------------------------------------------------------------------------------------------------------------------------+
 | EANREDE       | *{{sex}}* == male >> Dear Mr., *{{sex}}* == female >> Dear Mrs.                                                                          |
 +---------------+------------------------------------------------------------------------------------------------------------------------------------------+

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

 +---------------+-------------------------------------------------------------------+
 | Name          | Explanation                                                       |
 +===============+===================================================================+
 | form          | Formname defined in ttcontent record bodytext                     |
 |               |                                                                   |
 |               | * Fix. E.g. *form = person*                                       |
 |               | * via SIP. E.g. *form = {{form}}*                                 |
 +---------------+-------------------------------------------------------------------+
 | debugShowStack| Any exception will show the call stack. E.g. *debugShowStack = 1* |
 +---------------+-------------------------------------------------------------------+
 | debugLoad     | Debug Level for 'load', defined in ttcontent record bodytext      |
 +---------------+-------------------------------------------------------------------+
 | debugSave     | Debug Level for 'save', defined in ttcontent record bodytext      |
 +---------------+-------------------------------------------------------------------+
 | feUser        | Logged in Typo3 FE User                                           |
 +---------------+-------------------------------------------------------------------+
 | feUserUid     | Logged in Typo3 FE User uid                                       |
 +---------------+-------------------------------------------------------------------+
 | feUserGroup   | FE groups of logged in Typo3 FE User                              |
 +---------------+-------------------------------------------------------------------+
 | ttcontentUid  | Record id of current Typo3 content element                        |
 +---------------+-------------------------------------------------------------------+
 | typo3PageId   | Record id of current Typo3 page                                   |
 +---------------+-------------------------------------------------------------------+


Store: *FORM* - F
^^^^^^^^^^^^^^^^^
* Represents the values in the form, typically before saving them.
* Used for:

  * Formelements who will be rerendered, after a parent element has been changed by the user.
  * Formelement actions, before saving the form.
  * Values will be sanatized 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 form element (for 'p_id'): *{{p_id:F}}*                                |
 +--------------------+--------------------------------------------------------------------------------------------------------------------------------------------+

Store: *RECORD* - R
^^^^^^^^^^^^^^^^^^^
 +--------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
 | Name               | Explanation                                                                                                                                |
 +====================+============================================================================================================================================+
 | record column name | Name of a column of the primary table (as defined in the current form). To get, exactly and only, the specified form element: *{{p_id:R}}* |
 +--------------------+--------------------------------------------------------------------------------------------------------------------------------------------+

SQL
---

* 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
  * SHOW

* 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({{fe_user}}=0,'Yes','No')  FROM Vorlesung WHERE sem_id={{keySemId:Y}} }}
  {{SELECT id, city FROM Address AS adr WHERE adr.p_id={{SELECT id FROM Account AS acc WHERE acc.name={{fe_user}} }} }}

* 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: basic setup
-----------------

+------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
| 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                                                                            |
+------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|showButton              | set('new', 'delete')                                     | Default 'new,delete'. Displays button 'new' and 'delete'.                               |
+------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|render                  | enum('plain','table', 'bootstrap')                       | Default bootstrap                                                                       |
+------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|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                                                   | title: default number of 'bootstrap 12grid' columns                                     |
+------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|bsInputColumns          | string                                                   | input: default number of 'bootstrap 12grid' columns                                     |
+------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|bsNoteColumns           | string                                                   | note: default number of 'bootstrap 12grid' columns                                      |
+------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+
|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                                                                    |
+------------------------+----------------------------------------------------------+-----------------------------------------------------------------------------------------+

Field: Form.showButton
^^^^^^^^^^^^^^^^^^^^^^

Display or hide the button 'new' and / or 'delete'.

* *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*: The simple form of deleting a record only deletes the record itself, not any child records.



.. _form-parameter:

Field: Form.parameter
^^^^^^^^^^^^^^^^^^^^^

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

+------------------------+--------+---------------------------------------------------------------------------------------------------+
| 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                 |
+------------------------+--------+---------------------------------------------------------------------------------------------------+

* Example:

  * maxVisiblePill = 5
  * class = container-fluid

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 Form-Elements and Container-Elements (both with feIdContainer=0) will be ordered by 'ord'.
* Inside of a container, all nested elements will be displayed.

.. _class-container:

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

* Pills are containers for 'fieldset' *and* 'native' Form-Elements.
* Fieldsets are containers for 'native' Form-Elements

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

* Native Formelements can be assigned to a fieldset.
* 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.

* Parameter:

  * FormElement.'''name''': technical name, used as HTML identifier.
  * FormElement.'''label''': Label shown on the corresponding pill button or inside the dropdown menu.
  * FormElement.'''type''': *pill*
  * FormElement.'''feIdContainer''': 0  # Pill's can't be nested.
  * Form.'''Parameter''': *maxVisiblePill=<nr>* Number of Pill-Buttons shown. Undefined means unlimited. Excess Pill buttons will be displayed as a dropdown menu.

.. _class-native:

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

+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
| 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',    | Default: show - *Show*: regular user input field. *Readonly* : user can't change any data.        |
|              | 'required',  'lock',        | *Important* : user manipulated data won't be saved. *Required* User has to specify a value.       |
|              | 'disabled' )                | Typically, an <empty string> represents 'no value'. *Lock* form element is read only and grayed   |
|              |                             | out, *Disabled*: form element is not visible                                                      |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|class         | enum('native', 'action',    | Details below.                                                                                    |
|              | 'container')                |                                                                                                   |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|type          | enum('checkbox', 'dateJQW', 'datetimeJQW', 'gridJQW', 'hidden', 'text', 'note', 'password', 'radio', 'select', 'subrecord',     |
|              | 'textarea', 'timeJQW', 'upload', 'fieldset', 'pill', 'before_load', 'before_save', 'before_insert', 'before_update',            |
|              | 'before_delete', 'after_load', 'after_save', 'after_insert', 'after_update', 'after_delete', 'feGroup', 'sendmail')             |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|checkType     | enum('min|max', 'pattern',  |                                                                                                   |
|              | 'number', 'email')          |                                                                                                   |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|checkPattern  | 'regexp'                    |if $check_type=='pattern': pattern to match                                                        |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|onChange      | string                      |list of 'form element names' of current form, separated by ', ', If one of the named form elements |
|              |                             | change, reload own data / status / mode                                                           |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|ord           | string                      |display order of form elements ('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)                                                           |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|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' formelements                                                      |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|value         | text                        |Default value                                                                                      |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|sql1          | text                        |SQL query  ('sql' is a reserved keyword)                                                           |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|sql2          | text                        |second 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 defintion      |
|              |                             | reference such FE-groups. Easy way of granting permission.                                        |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|deleted       | string                      |'yes'|'no'.                                                                                        |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|modified      | timestamp                   |updated autmatically through stored procedure                                                      |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+
|created       | datetime                    |set once through QFQ                                                                               |
+--------------+-----------------------------+---------------------------------------------------------------------------------------------------+


+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| Attribute        | checkbox | dateJQW | datetimeJQW |  gridJQW | hidden | input | note | password | radio | select | subrecord | textarea | timeJQW | upload |
+==================+==========+=========+=============+==========+========+=======+======+==========+=======+========+===========+==========+=========+========+
|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 | hidden | input | note | password | radio | select | subrecord | textarea | timeJQW | upload |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|checkType         |          |   -     |   -         |          |        |   -   |      |   -      |       |        |           |   -      |   -     |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|checkPattern      |          |   -     |   -         |          |        |   -   |      |   -      |       |        |           |   -      |   -     |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|onChange          |   -      |   -     |   -         |          |        |   -   |      |   -      |   -   |   -    |           |   -      |   -     |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|ord               |   -      |   -     |   -         |   -      |   -    |   -   |   -  |   -      |   -   |   -    |   -       |   -      |   -     |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|tabindex          |   -      |   -     |   -         |   -      |   -    |   -   |   -  |   -      |   -   |   -    |   -       |   -      |   -     |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|size              |   -  1   |         |             |          |        |   -   |      |   -      |   -  1|   -  2 |           |   -  1   |   -     |   -  ? |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|maxLength         |          |         |             |          |        |   -   |      |   -      |       |        |           |          |         |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|note              |   -      |   -     |   -         |          |        |   -   |   -  |   -      |   -   |   -    |   -       |   -      |   -     |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|tooltip           |   -      |   -     |   -         |          |        |   -   |      |   -      |   -   |   -    |           |   -      |   -     |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|placeholder       |          |   -     |   -         |          |        |   -   |      |          |       |        |           |   -      |   -     |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|clientJs          |          |   -     |   -         |   -      |        |   -   |      |   -      |   -   |   -    |           |   -      |   -     |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|value             |   -      |   -     |   -         |   -      |   -    |   -   |   -  |   -      |   -   |   -    |           |   -      |   -     |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|sql1              |?                                                                                                                                          |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|sql2              |?                                                                                                                                          |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
|Additional attributes in Field 'parameter'. Typically in key=value format.                                                                                    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| type             | checkbox | dateJQW | datetimeJQW | gridJQW  | hidden | input | note | password | radio | select | subrecord | textarea | timeJQW | upload |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| accept           |?                                                                                                                                          |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| alt              |?                                                                                                                                          |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| autocomplete     |          |   -     |   -         |          |        |   -   |      |          |       |        |           |   -      |   -     |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| autofocus        |   -      |   -     |   -         |          |        |   -   |      |   -      |   -   |   -    |           |   -      |   -     |   -    |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| checkBoxMode     |   -      |     -   |             |          |        |       |      |          |       |        |           |          |         |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| checked          |   -      |         |             |          |        |   -   |      |          |   -   |        |           |          |         |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| unchecked        |   -      |         |             |          |        |   -   |      |          |   -   |        |           |          |         |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| label2           |   -      |         |             |          |        |       |      |          |   -   |        |           |          |         |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| itemList         |   -      |         |             |          |        |       |      |          |   -   |   -    |           |          |         |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| emptyItemAtStart |          |         |             |          |        |       |      |          |       |   -    |           |          |         |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| emptyItemAtEnd   |          |         |             |          |        |       |      |          |       |   -    |           |          |         |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| emptyHide        |          |         |             |          |        |       |      |          |       |   -    |           |          |         |        |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+
| accept           |          |         |             |          |        |       |      |          |       |        |           |          |         |   -  3 |
+------------------+----------+---------+-------------+----------+--------+-------+------+----------+-------+--------+-----------+----------+---------+--------+

* 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', ...

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.
  * *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.
  * *parameter*

    * *checkBoxMode*: multi
    * *orientation*: vertical | horizontal (default), optional - the checkboxes are rendered horizontal or vertical.
    * *itemList* - E.g.:

      * ``itemList=red,blue,orange``
      * ``itemList=1:red,2:blue,3:orange``
      * ``itemList={{!SELECT id, value FROM someTable}}``

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

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

Type: hidden
^^^^^^^^^^^^

Type: input
^^^^^^^^^^^

* General input for text and number.
* size:

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

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

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

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

  * a) '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*.

  * b) FormElement.'''parameter''':

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

  * c) Definition of the *enum* or *set* field (only labels, no ids are 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 usefull for e.g. Enums, which have a en empty
    entry and the empty value should not be an option to be selected.

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

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

  * a) '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*.

  * b) FormElement.'''parameter''':

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

  * c) Definition of the *enum* or *set* field (only labels, no ids are possible).

* FormElement.'''size''':

  * <empty>|0|1: Dropdown list.
  * >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 usefull for e.g. Enums, which have a en empty
    entry and the empty value should not be an option to be selected.

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

'subrecord' will be rendered as HTML table.

* *parameter*

  * *detail*: e.g. *detail=id:gr_id,#{{a}}:p_id,#12:x_id*
  * *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.

* *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 adresse 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.

* Columnname: *<title>[|<number>][|width=<number>][|nostrip][|icon][|url][|mailto]*

  * *<number>*: any 'digit only' will be treated as '''width'''.
  * *width=<number>*: max. number of chars displayed per cell in 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 links, images, ... possible.
  * *icon*: the cell value contains the name of an icon in *fileadmin/icons*. Empty cell values will omit an html image tag (=nothing renderd in the cell).
  * *mailto*: value will be rendered as a mailto link.
  * *url*: value will be rendered as a link.
  * *title=<text>* or '<none of the above>': column '''title'''.
  * The parameters are position independet.
  * 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' ...


Type: string
^^^^^^^^^^^^

Type: submit
^^^^^^^^^^^^

Typically not used. Useful if user wishes an explicit 'Submit' Button.

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

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

* See: https://www.w3.org/TR/html5/forms.html#file-upload-state-(type=file)
* parameter:accept: *image/*,video/*,audio/*,.doc,.docx,.pdf,<mime type>*

.. _class-action:

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

Type: before load
^^^^^^^^^^^^^^^^^

* Former: formallow
* Function: a) fire SQL, b) allow / deny access
* respects 'processRow'

Type: after load
^^^^^^^^^^^^^^^^

* Probably not implemented: no usecase.
* Function: fire SQL
* respects 'processRow'

Type: before save
^^^^^^^^^^^^^^^^^

* Former: lookup
* Function: a) fire SQL, b) allow / deny access
* respects 'processRow'

Type: after save
^^^^^^^^^^^^^^^^

* Maybe successor of *addnupdate*
* Function: fire SQL
* respects 'processRow'

Type: before /after insert
^^^^^^^^^^^^^^^^^^^^^^^^^^

* Function: a) fire SQL, b) (before) allow / deny access
* respects 'processRow'

Type: before /after update
^^^^^^^^^^^^^^^^^^^^^^^^^^

* Function: a) fire SQL, b) (before) allow / deny access
* respects 'processRow'

Type: before / after delete
^^^^^^^^^^^^^^^^^^^^^^^^^^^

* Function: a) fire SQL, b) (before) allow / deny access
* respects 'processRow'

Type: addnupdate
^^^^^^^^^^^^^^^^

* Probably not implemented: no usecase. Probably replaced by after save | after insert. Depends on functionality of 'after ...'.

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

* Send mail(s) on request.
* respects 'processRow'

.. _dynamic-update:

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

Depending of the form requirements, it's necessary to update FormElements depending on the recent user input. E.g. a user
activates a checkbox and therefore the content of a select list should change.

Make a form dynamic:

* Mark all FormElements with {dynamic update}=enabled, which should send **or** receive a 'do update' signal.
* Define the receiving FormElements in a way, that they will interpret the recent user change. In the example, the FormElement
  'carPriceRange' is the sender and the receiving FormElement might be of type 'radio' or 'selectList'.

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


Report
======


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 first_name and last_name. To create a simple list of all persons, we can do the following:
::

    10.sql = SELECT id AS person_id, CONCAT(first_name, " ", last_name, " ") 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:
::

    Marc MusterElton JohnSpeedy Gonzales

..



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 person_id, CONCAT(first_name, " ", last_name, " ") AS name FROM person
    10.sep = <br />

HTML output:
::

    Marc Muster<br />Elton John<br />Speedy Conzales<br />

..


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>}}

        Sanitized URL (Post/Get) variables: {{url.<name>}}

        Row index and total rows: {{<level>.line.count}} or {{<level>.line.total}}

        'last_insert_id' and 'affected_rows': {{<level>.line.total}} (*total* may have a different meaning, depending on the type of the SQL command)

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

    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 specifying

::

    debugShowBodyText = 1

A small symbol with a tooltip will be shown, where the content record will be displayed on the webpage.

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 _person_id, CONCAT(first_name, " ", last_name, " ") AS name FROM person
    10.rsep = <br />

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

..

This would result in

::


    Marc Muster (3004 Bern)
    Elton John (8008 Zürich)
    Speedy Conzales (3012 Bern)

..

Across several lines
^^^^^^^^^^^^^^^^^^^^

To make SQL quieres more readable, it's possible to split a line across several lines. Lines with keywords are on their
own - if there are non 'keyword' lines, they will be appended at the last keyword line. 'Keyword' lines:

 * <level>.<keyword> =
 * {
 * <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 by using curly brackets::

   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'
   }


Columns of the upper level result can be accessed via variables, eg. {{10.person_id}} will be replaced by the value in the person_id 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 p_id, p.first_name, " - ", p.last_name 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.p_id={{20.p_id}} 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.
* Column names, which start with a '_', will not be printed. This is useful if you only want to access the content of
  some columns during later on via the {{<level>.<column>}} variable but don't want to print the content of those columns.

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

* The input parameters for the processing function are stored as 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.

+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|**Special column name** | **Purpose**                                                                                                                                                                                 |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|_<someName>             |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.            |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|?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 usefull for tables with limited column width.                                                                                                                |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|?img                    |Display images.                                                                                                                                                                              |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|?F                      |Wrap/modify content. Undocumented.                                                                                                                                                           |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

.. _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.
* For fewer conflicts:

        A:u|m|p:url|mail|page (A=Anchor)

        G:E|N|T|I|M|C (G=Grafic)

        G:P|b|C:<Color>|<Text> (G=Grafic)

+---+---+----------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|URL|IMG|Meaning   |Qualifier                          |Example                    |Description                                                                                                                             |
+---+---+----------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|   |   |Anchor    |A:...                              |See above                  |Superclass for regular URL defnition                                                                                                    |
+---+---+----------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|   |   |Grafic    |G:...                              |See above                  |Superclass for graphic definiton                                                                                                        |
+---+---+----------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+
|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]                    |`render-mode`_ Default: 0                                                                                                               |
+---+---+----------+-----------------------------------+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------+