pageRenderer = $pageRenderer; $this->providerResolver = $providerResolver; } public function renderPreview(array $row): ?array { $preview = null; $fieldName = null; $headerContent = null; $drawItem = true; $itemContent = ''; $providers = $this->providerResolver->resolveConfigurationProviders('tt_content', $fieldName, $row); foreach ($providers as $provider) { /** @var ProviderInterface $provider */ [$previewHeader, $previewContent, $continueDrawing] = $provider->getPreview($row); if (!empty($previewHeader)) { $headerContent = $previewHeader . (!empty($headerContent) ? ': ' . $headerContent : ''); $drawItem = false; } if (!empty($previewContent)) { $itemContent .= $previewContent; $drawItem = false; } $preview = [$headerContent, $itemContent, $drawItem]; if (false === $continueDrawing) { break; } } $this->attachAssets(); return $preview; } protected function attachAssets(): void { if (!static::$assetsIncluded) { $this->pageRenderer->addCssFile('EXT:flux/Resources/Public/css/flux.css'); $this->pageRenderer->loadRequireJsModule('TYPO3/CMS/Flux/FluxCollapse'); static::$assetsIncluded = true; } } }