TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:00 +02:00
commit f9941541b7
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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\Backend\Preview;
+
+use Psr\Log\LoggerInterface;
+use TYPO3\CMS\Backend\Utility\BackendUtility;
+use TYPO3\CMS\Backend\View\Event\PageContentPreviewRenderingEvent;
+use TYPO3\CMS\Core\Attribute\AsEventListener;
+use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
+use TYPO3\CMS\Core\Core\Environment;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\View\ViewFactoryData;
+use TYPO3\CMS\Core\View\ViewFactoryInterface;
+
+/**
+ * Check if a Fluid-based preview template was defined for a given CType and render it via Fluid.
+ *
+ * Example in page TSconfig:
+ * mod.web_layout.tt_content.preview.textmedia = EXT:site_mysite/Resources/Private/Templates/Preview/Textmedia.fluid.html
+ *
+ * @internal not part of the TYPO3 Core API
+ */
+final readonly class FluidBasedContentPreviewRenderer
+{
+    public function __construct(
+        private LoggerInterface $logger,
+        private ViewFactoryInterface $viewFactory,
+    ) {}
+
+    #[AsEventListener('typo3-backend/fluid-preview/content')]
+    public function __invoke(PageContentPreviewRenderingEvent $event): void
+    {
+        $record = $event->getRecord();
+        $context = $event->getPageLayoutContext();
+        $fluidTemplateFile = BackendUtility::getPagesTSconfig($record->getPid())['mod.']['web_layout.'][$event->getTable() . '.']['preview.'][$event->getRecordType()] ?? '';
+        if ($fluidTemplateFile === '') {
+            return;
+        }
+
+        $fluidTemplateFileAbsolutePath = GeneralUtility::getFileAbsFileName($fluidTemplateFile);
+        if ($fluidTemplateFileAbsolutePath === '') {
+            return;
+        }
+        try {
+            $event->setPreviewContent(
+                $this->viewFactory
+                    ->create(new ViewFactoryData(templatePathAndFilename: $fluidTemplateFileAbsolutePath, request: $context->getCurrentRequest()))
+                    ->assign('record', $record)
+                    ->render()
+            );
+        } catch (\Exception $e) {
+            $this->logger->warning('The backend preview for content element {uid} can not be rendered using the Fluid template file "{file}"', [
+                'uid' => $record->getUid(),
+                'file' => $fluidTemplateFileAbsolutePath,
+                'exception' => $e,
+            ]);
+            if ($this->getBackendUser()->shallDisplayDebugInformation()) {
+                $event->setPreviewContent(
+                    $this->viewFactory
+                        ->create(new ViewFactoryData(templatePathAndFilename: 'EXT:backend/Resources/Private/Templates/PageLayout/FluidBasedContentPreviewRenderingException.fluid.html'))
+                        ->assign('error', [
+                            'message' => str_replace(Environment::getProjectPath(), '', $e->getMessage()),
+                            'title' => 'Error while rendering FluidTemplate preview using ' . str_replace(Environment::getProjectPath(), '', $fluidTemplateFileAbsolutePath),
+                        ])
+                        ->render()
+                );
+            }
+        }
+    }
+
+    private function getBackendUser(): BackendUserAuthentication
+    {
+        return $GLOBALS['BE_USER'];
+    }
+}