EntityRepository.php in Zircon Profile 8

Contains \Drupal\Core\Entity\EntityRepository.

Namespace

Drupal\Core\Entity

File

core/lib/Drupal/Core/Entity/EntityRepository.php

<?php

/**
 * @file
 * Contains \Drupal\Core\Entity\EntityRepository.
 */
namespace Drupal\Core\Entity;

use Drupal\Core\Config\Entity\ConfigEntityTypeInterface;
use Drupal\Core\Language\LanguageInterface;
use Drupal\Core\Language\LanguageManagerInterface;
use Drupal\Core\TypedData\TranslatableInterface;

/**
 * Provides several mechanisms for retrieving entities.
 */
class EntityRepository implements EntityRepositoryInterface {

  /**
   * The entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * The language manager.
   *
   * @var \Drupal\Core\Language\LanguageManagerInterface
   */
  protected $languageManager;

  /**
   * Constructs a new EntityRepository.
   *
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager.
   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
   *   The language manager.
   */
  public function __construct(EntityTypeManagerInterface $entity_type_manager, LanguageManagerInterface $language_manager) {
    $this->entityTypeManager = $entity_type_manager;
    $this->languageManager = $language_manager;
  }

  /**
   * {@inheritdoc}
   */
  public function loadEntityByUuid($entity_type_id, $uuid) {
    $entity_type = $this->entityTypeManager
      ->getDefinition($entity_type_id);
    if (!($uuid_key = $entity_type
      ->getKey('uuid'))) {
      throw new EntityStorageException("Entity type {$entity_type_id} does not support UUIDs.");
    }
    $entities = $this->entityTypeManager
      ->getStorage($entity_type_id)
      ->loadByProperties([
      $uuid_key => $uuid,
    ]);
    return reset($entities);
  }

  /**
   * {@inheritdoc}
   */
  public function loadEntityByConfigTarget($entity_type_id, $target) {
    $entity_type = $this->entityTypeManager
      ->getDefinition($entity_type_id);

    // For configuration entities, the config target is given by the entity ID.
    // @todo Consider adding a method to allow entity types to indicate the
    //   target identifier key rather than hard-coding this check. Issue:
    //   https://www.drupal.org/node/2412983.
    if ($entity_type instanceof ConfigEntityTypeInterface) {
      $entity = $this->entityTypeManager
        ->getStorage($entity_type_id)
        ->load($target);
    }
    else {
      $entity = $this
        ->loadEntityByUuid($entity_type_id, $target);
    }
    return $entity;
  }

  /**
   * {@inheritdoc}
   */
  public function getTranslationFromContext(EntityInterface $entity, $langcode = NULL, $context = array()) {
    $translation = $entity;
    if ($entity instanceof TranslatableInterface && count($entity
      ->getTranslationLanguages()) > 1) {
      if (empty($langcode)) {
        $langcode = $this->languageManager
          ->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)
          ->getId();
        $entity
          ->addCacheContexts([
          'languages:' . LanguageInterface::TYPE_CONTENT,
        ]);
      }

      // Retrieve language fallback candidates to perform the entity language
      // negotiation, unless the current translation is already the desired one.
      if ($entity
        ->language()
        ->getId() != $langcode) {
        $context['data'] = $entity;
        $context += array(
          'operation' => 'entity_view',
          'langcode' => $langcode,
        );
        $candidates = $this->languageManager
          ->getFallbackCandidates($context);

        // Ensure the default language has the proper language code.
        $default_language = $entity
          ->getUntranslated()
          ->language();
        $candidates[$default_language
          ->getId()] = LanguageInterface::LANGCODE_DEFAULT;

        // Return the most fitting entity translation.
        foreach ($candidates as $candidate) {
          if ($entity
            ->hasTranslation($candidate)) {
            $translation = $entity
              ->getTranslation($candidate);
            break;
          }
        }
      }
    }
    return $translation;
  }

}

Classes

Name	Description
EntityRepository	Provides several mechanisms for retrieving entities.