DataHandlerSlugUpdateHook.php

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<?php
 
declare(strict_types=1);
 
/*
 * 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!
 */
 
namespace ‪TYPO3\CMS\Redirects\Hooks;
 
use ‪TYPO3\CMS\Backend\Utility\BackendUtility;
use ‪TYPO3\CMS\Core\DataHandling\DataHandler;
use ‪TYPO3\CMS\Core\Utility\MathUtility;
use ‪TYPO3\CMS\Redirects\Service\SlugService;
 
class ‪DataHandlerSlugUpdateHook
{
    protected ‪$slugService;
 
    protected ‪$persistedSlugValues;
 
    public function ‪__construct(‪SlugService ‪$slugService)
    {
        $this->slugService = ‪$slugService;
    }
 
    public function ‪processDatamap_preProcessFieldArray(array $incomingFieldArray, string $table, $id, ‪DataHandler $dataHandler): void
    {
        if (
            $table !== 'pages'
            || empty($incomingFieldArray['slug'])
            || $this->‪isNestedHookInvocation($dataHandler)
            || !‪MathUtility::canBeInterpretedAsInteger($id)
            || !$dataHandler->‪checkRecordUpdateAccess($table, $id, $incomingFieldArray)
        ) {
            return;
        }
 
        $record = ‪BackendUtility::getRecordWSOL($table, (int)$id, 'slug');
        $this->persistedSlugValues[(int)$id] = $record['slug'];
    }
 
    public function ‪processDatamap_postProcessFieldArray(string $status, string $table, $id, array $fieldArray, ‪DataHandler $dataHandler): void
    {
        $persistedSlugValue = $this->persistedSlugValues[(int)$id] ?? null;
 
        if (
            $table !== 'pages'
            || $status !== 'update'
            || empty($fieldArray['slug'])
            || $persistedSlugValue === null
            || $persistedSlugValue === $fieldArray['slug']
            || $this->‪isNestedHookInvocation($dataHandler)
        ) {
            return;
        }
 
        $this->slugService->rebuildSlugsForSlugChange($id, $persistedSlugValue, $fieldArray['slug'], $dataHandler->‪getCorrelationId());
    }
 
    protected function ‪isNestedHookInvocation(‪DataHandler $dataHandler): bool
    {
        $correlationId = $dataHandler->‪getCorrelationId();
        $correlationIdAspects = $correlationId ? $correlationId->‪getAspects() ?? [] : [];
        return in_array(‪SlugService::CORRELATION_ID_IDENTIFIER, $correlationIdAspects, true);
    }
}