TcaGroup.php

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<?php
namespace TYPO3\CMS\Backend\Form\FormDataProvider;

/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

use TYPO3\CMS\Backend\Form\FormDataProviderInterface;
use TYPO3\CMS\Core\Database\RelationHandler;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Core\Utility\PathUtility;

class TcaGroup implements FormDataProviderInterface
{
    public function addData(array $result)
    {
        foreach ($result['processedTca']['columns'] as $fieldName => $fieldConfig) {
            if (empty($fieldConfig['config']['type'])
                || $fieldConfig['config']['type'] !== 'group'
                || empty($fieldConfig['config']['internal_type'])
            ) {
                continue;
            }

            $databaseRowFieldContent = '';
            if (!empty($result['databaseRow'][$fieldName])) {
                $databaseRowFieldContent = (string)$result['databaseRow'][$fieldName];
            }

            $internalType = $fieldConfig['config']['internal_type'];
            if ($internalType === 'file_reference' || $internalType === 'file') {
                $files = array();
                // Simple list of files
                $fileList = GeneralUtility::trimExplode(',', $databaseRowFieldContent, true);
                foreach ($fileList as $file) {
                    if ($file) {
                        $files[] = rawurlencode($file) . '|' . rawurlencode(PathUtility::basename($file));
                    }
                }
                $result['databaseRow'][$fieldName] = implode(',', $files);
            } elseif ($internalType === 'db') {
                $relationHandler = GeneralUtility::makeInstance(RelationHandler::class);
                $relationHandler->start(
                    $databaseRowFieldContent,
                    $fieldConfig['config']['allowed'],
                    $fieldConfig['config']['MM'],
                    $result['databaseRow']['uid'],
                    $result['tableName'],
                    $fieldConfig['config']
                );
                $relationHandler->getFromDB();
                $result['databaseRow'][$fieldName] = $relationHandler->readyForInterface();
            } else {
                // @todo: "folder" is a valid internal_type, too.
                throw new \UnexpectedValueException(
                    'TCA internal_type of field "' . $fieldName . '" in table ' . $result['tableName']
                    . ' must be set to either "db", "file" or "file_reference"',
                    1438780511
                );
            }
        }

        return $result;
    }
}