EditController.php

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<?php
namespace TYPO3\CMS\Backend\Controller\Wizard;

use TYPO3\CMS\Backend\Utility\BackendUtility;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Core\Utility\HttpUtility;

class EditController {

    // Internal, static: GPvars
    // Wizard parameters, coming from TCEforms linking to the wizard.
    public $P;

    // Boolean; if set, the window will be closed by JavaScript
    public $doClose;

    public function __construct() {
        $GLOBALS['LANG']->includeLLFile('EXT:lang/locallang_wizards.xlf');
        $GLOBALS['SOBE'] = $this;

        $this->init();
    }

    protected function init() {
        $this->P = GeneralUtility::_GP('P');
        // Used for the return URL to alt_doc.php so that we can close the window.
        $this->doClose = GeneralUtility::_GP('doClose');
    }

    public function main() {
        if ($this->doClose) {
            $this->closeWindow();
        } else {
            // Initialize:
            $table = $this->P['table'];
            $field = $this->P['field'];
            $config = $GLOBALS['TCA'][$table]['columns'][$field]['config'];
            $fTable = $this->P['currentValue'] < 0 ? $config['neg_foreign_table'] : $config['foreign_table'];
            // Detecting the various allowed field type setups and acting accordingly.
            if (is_array($config) && $config['type'] == 'select' && !$config['MM'] && $config['maxitems'] <= 1 && \TYPO3\CMS\Core\Utility\MathUtility::canBeInterpretedAsInteger($this->P['currentValue']) && $this->P['currentValue'] && $fTable) {
                // SINGLE value:
                $redirectUrl = 'alt_doc.php?returnUrl=' . rawurlencode(BackendUtility::getModuleUrl('wizard_edit', array('doClose' => 1))) . '&edit[' . $fTable . '][' . $this->P['currentValue'] . ']=edit';
                HttpUtility::redirect($redirectUrl);
            } elseif (is_array($config) && $this->P['currentSelectedValues'] && ($config['type'] == 'select' && $config['foreign_table'] || $config['type'] == 'group' && $config['internal_type'] == 'db')) {
                // MULTIPLE VALUES:
                // Init settings:
                $allowedTables = $config['type'] == 'group' ? $config['allowed'] : $config['foreign_table'] . ',' . $config['neg_foreign_table'];
                $prependName = 1;
                $params = '';
                // Selecting selected values into an array:
                $dbAnalysis = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Database\\RelationHandler');
                $dbAnalysis->start($this->P['currentSelectedValues'], $allowedTables);
                $value = $dbAnalysis->getValueArray($prependName);
                // Traverse that array and make parameters for alt_doc.php:
                foreach ($value as $rec) {
                    $recTableUidParts = GeneralUtility::revExplode('_', $rec, 2);
                    $params .= '&edit[' . $recTableUidParts[0] . '][' . $recTableUidParts[1] . ']=edit';
                }
                // Redirect to alt_doc.php:
                HttpUtility::redirect('alt_doc.php?returnUrl=' . rawurlencode(BackendUtility::getModuleUrl('wizard_edit', array('doClose' => 1))) . $params);
            } else {
                $this->closeWindow();
            }
        }
    }

    public function closeWindow() {
        echo '<script language="javascript" type="text/javascript">close();</script>';
        die;
    }

}