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view core/modules/node/src/Controller/NodePreviewController.php @ 19:fa3358dc1485 tip
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author | Chris Cannam |
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date | Wed, 28 Aug 2019 13:14:47 +0100 |
parents | af1871eacc83 |
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<?php namespace Drupal\node\Controller; use Drupal\Core\Entity\Controller\EntityViewController; use Drupal\Core\Entity\EntityInterface; use Drupal\Core\Entity\EntityRepositoryInterface; use Drupal\Core\Entity\EntityTypeManagerInterface; use Drupal\Core\Render\RendererInterface; use Symfony\Component\DependencyInjection\ContainerInterface; /** * Defines a controller to render a single node in preview. */ class NodePreviewController extends EntityViewController { /** * The entity repository service. * * @var \Drupal\Core\Entity\EntityRepositoryInterface */ protected $entityRepository; /** * Creates an NodeViewController object. * * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager * The entity type manager. * @param \Drupal\Core\Render\RendererInterface $renderer * The renderer service. * @param \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository * The entity repository. */ public function __construct(EntityTypeManagerInterface $entity_type_manager, RendererInterface $renderer, EntityRepositoryInterface $entity_repository = NULL) { parent::__construct($entity_type_manager, $renderer); if (!$entity_repository) { @trigger_error('The entity.repository service must be passed to NodePreviewController::__construct(), it is required before Drupal 9.0.0. See https://www.drupal.org/node/2549139.', E_USER_DEPRECATED); $entity_repository = \Drupal::service('entity.repository'); } $this->entityRepository = $entity_repository; } /** * {@inheritdoc} */ public static function create(ContainerInterface $container) { return new static( $container->get('entity_type.manager'), $container->get('renderer'), $container->get('entity.repository') ); } /** * {@inheritdoc} */ public function view(EntityInterface $node_preview, $view_mode_id = 'full', $langcode = NULL) { $node_preview->preview_view_mode = $view_mode_id; $build = parent::view($node_preview, $view_mode_id); $build['#attached']['library'][] = 'node/drupal.node.preview'; // Don't render cache previews. unset($build['#cache']); return $build; } /** * The _title_callback for the page that renders a single node in preview. * * @param \Drupal\Core\Entity\EntityInterface $node_preview * The current node. * * @return string * The page title. */ public function title(EntityInterface $node_preview) { return $this->entityRepository->getTranslationFromContext($node_preview)->label(); } }