EntityReference.php in Entity Usage 8.3

Namespace

Drupal\entity_usage\Plugin\EntityUsage\Track

File

src/Plugin/EntityUsage/Track/EntityReference.php

<?php

namespace Drupal\entity_usage\Plugin\EntityUsage\Track;

use Drupal\Core\Field\FieldItemInterface;
use Drupal\entity_usage\EntityUsageTrackBase;

/**
 * Tracks usage of entities related in entity_reference fields.
 *
 * @EntityUsageTrack(
 *   id = "entity_reference",
 *   label = @Translation("Entity Reference"),
 *   description = @Translation("Tracks relationships created with 'Entity Reference' fields."),
 *   field_types = {"entity_reference", "entity_reference_revisions"},
 * )
 */
class EntityReference extends EntityUsageTrackBase {

  /**
   * {@inheritdoc}
   */
  public function getTargetEntities(FieldItemInterface $item) {

    /** @var \Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem $item */
    $item_value = $item
      ->getValue();
    if (empty($item_value['target_id'])) {
      return [];
    }
    $target_type = $item
      ->getFieldDefinition()
      ->getSetting('target_type');

    // Only return a valid result if the target entity exists.
    if (!$this->entityTypeManager
      ->getStorage($target_type)
      ->load($item_value['target_id'])) {
      return [];
    }
    $target_type_and_id = $target_type . '|' . $item_value['target_id'];

    // For paragraph references, send back the revision ID as well, since this
    // will allow the system to load that revision and check its fields.
    if (!empty($item_value['target_revision_id'])) {
      $target_type_and_id = $target_type_and_id . '|' . $item_value['target_revision_id'];
    }
    return [
      $target_type_and_id,
    ];
  }

}

Classes

Name	Description
EntityReference	Tracks usage of entities related in entity_reference fields.