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- <?php
- namespace Drupal\Core\ParamConverter;
- use Drupal\Core\Entity\EntityInterface;
- use Drupal\Core\Entity\EntityRepositoryInterface;
- use Drupal\Core\Entity\EntityTypeManagerInterface;
- use Drupal\Core\Entity\TranslatableInterface;
- use Symfony\Component\Routing\Route;
- /**
- * Parameter converter for upcasting entity revision IDs to full objects.
- *
- * This is useful for pages which want to show a specific revision, like
- * "/entity_example/{entity_example}/revision/{entity_example_revision}".
- *
- *
- * In order to use it you should specify some additional options in your route:
- * @code
- * example.route:
- * path: /foo/{entity_example_revision}
- * options:
- * parameters:
- * entity_example_revision:
- * type: entity_revision:entity_example
- * @endcode
- */
- class EntityRevisionParamConverter implements ParamConverterInterface {
- use DynamicEntityTypeParamConverterTrait;
- /**
- * The entity type manager.
- *
- * @var \Drupal\Core\Entity\EntityTypeManagerInterface
- */
- protected $entityTypeManager;
- /**
- * The entity repository.
- *
- * @var \Drupal\Core\Entity\EntityRepositoryInterface
- */
- protected $entityRepository;
- /**
- * Creates a new EntityRevisionParamConverter instance.
- *
- * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
- * The entity type manager.
- * @param \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository
- * The entity repository.
- */
- public function __construct(EntityTypeManagerInterface $entity_type_manager, EntityRepositoryInterface $entity_repository) {
- $this->entityTypeManager = $entity_type_manager;
- $this->entityRepository = $entity_repository;
- }
- /**
- * {@inheritdoc}
- */
- public function convert($value, $definition, $name, array $defaults) {
- $entity_type_id = $this->getEntityTypeFromDefaults($definition, $name, $defaults);
- $entity = $this->entityTypeManager->getStorage($entity_type_id)->loadRevision($value);
- // If the entity type is translatable, ensure we return the proper
- // translation object for the current context.
- if ($entity instanceof EntityInterface && $entity instanceof TranslatableInterface) {
- $entity = $this->entityRepository->getTranslationFromContext($entity, NULL, ['operation' => 'entity_upcast']);
- }
- return $entity;
- }
- /**
- * {@inheritdoc}
- */
- public function applies($definition, $name, Route $route) {
- return isset($definition['type']) && strpos($definition['type'], 'entity_revision:') !== FALSE;
- }
- }
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