QfqController.php

<?php
/**
 * @author Rafael Ostertag <rafael.ostertag@math.uzh.ch>
 */

namespace IMATHUZH\Qfq\Controller;

use qfq;

require_once(__DIR__ . '/../../qfq/qfq/QuickFormQuery.php');
require_once(__DIR__ . '/../../qfq/qfq/exceptions/UserFormException.php');
require_once(__DIR__ . '/../../qfq/qfq/exceptions/UserReportException.php');
require_once(__DIR__ . '/../../qfq/qfq/exceptions/CodeException.php');
require_once(__DIR__ . '/../../qfq/qfq/exceptions/DbException.php');

/**
 * Class QfqController
 * @package IMATHUZH\Qfq\Controller
 */
class QfqController extends \TYPO3\CMS\Extbase\Mvc\Controller\ActionController {

    /**
     * @return string
     * @throws qfq\CodeException
     * @throws qfq\UserFormException
     */
    public function showAction() {

        $origErrorReporting = '';
        $flagOk = false;

        try {
            $contentObject = $this->configurationManager->getContentObject();

            // By T3 default 'E_NOTICE' is unset. E.g. 'Undefined Index' will throw an exception.
            // QFQ like to see those 'E_NOTICE'
            $origErrorReporting = error_reporting();
            error_reporting($origErrorReporting | E_NOTICE);

            $qfq = new \qfq\QuickFormQuery($contentObject->data);
            $html = $qfq->process();
            $flagOk = true;

        } catch (qfq\UserFormException $e) {
            $html = $e->formatMessage();

        } catch (qfq\UserReportException $e) {
            $html = $e->formatMessage();

        } catch (qfq\CodeException $e) {
            $html = $e->formatMessage();

        } catch (qfq\DbException $e) {
            $html = $e->formatMessage();

        } catch (qfq\ShellException $e) {
            $html = $e->formatMessage();

        } catch (qfq\DownloadException $e) {
            $html = $e->formatMessage();

        } catch (\Exception $e) {
            $html = "Generic Exception: " . $e->getMessage();
        }

        if (!$flagOk) {
            $html = "<div class='alert alert-warning'>$html</div>";
        }

        // Restore has to be outside of try/catch - E_NOTICE needs to unset for further T3 handling after an QFQ Exception.
        error_reporting($origErrorReporting);

        $this->view->assign('qfqOutput', $html);

        return $this->view->render();
    }

}