LayoutBuilderFieldSerializer.php in Acquia Content Hub 8.2

Namespace

Drupal\acquia_contenthub\EventSubscriber\SerializeContentField

File

src/EventSubscriber/SerializeContentField/LayoutBuilderFieldSerializer.php

<?php

namespace Drupal\acquia_contenthub\EventSubscriber\SerializeContentField;

use Drupal\acquia_contenthub\AcquiaContentHubEvents;
use Drupal\acquia_contenthub\Event\SerializeCdfEntityFieldEvent;
use Drupal\acquia_contenthub\LayoutBuilder\LayoutBuilderDataHandlerTrait;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**
 * Subscribes to entity field serialization to handle layout builder fields.
 */
class LayoutBuilderFieldSerializer implements EventSubscriberInterface {
  use ContentFieldMetadataTrait;
  use LayoutBuilderDataHandlerTrait;
  const FIELD_TYPE = 'layout_section';

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

  /**
   * LayoutBuilderFieldSerializer constructor.
   *
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entityTypeManager
   *   The entity type manager.
   */
  public function __construct(EntityTypeManagerInterface $entityTypeManager) {
    $this->entityTypeManager = $entityTypeManager;
  }

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events[AcquiaContentHubEvents::SERIALIZE_CONTENT_ENTITY_FIELD][] = [
      'onSerializeContentField',
    ];
    return $events;
  }

  /**
   * Prepare layout builder field.
   *
   * @param \Drupal\acquia_contenthub\Event\SerializeCdfEntityFieldEvent $event
   *   The content entity field serialization event.
   *
   * @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
   * @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
   */
  public function onSerializeContentField(SerializeCdfEntityFieldEvent $event) {
    $event_field_type = $event
      ->getField()
      ->getFieldDefinition()
      ->getType();
    if ($event_field_type !== self::FIELD_TYPE) {
      return;
    }
    $this
      ->setFieldMetaData($event);
    $data = [];

    /** @var \Drupal\Core\Entity\TranslatableInterface $entity */
    $entity = $event
      ->getEntity();
    foreach ($entity
      ->getTranslationLanguages() as $langcode => $language) {
      $field = $event
        ->getFieldTranslation($langcode);
      if ($field
        ->isEmpty()) {
        $data['value'][$langcode] = [];
        continue;
      }
      $sections = [];
      foreach ($field as $item) {
        $sections[] = $item
          ->getValue()['section'];
      }
      $sections = $this
        ->serializeSections(...$sections);
      foreach ($sections as $section) {
        $data['value'][$langcode][] = [
          'section' => $section,
        ];
      }
    }
    $event
      ->setFieldData($data);
    $event
      ->stopPropagation();
  }

}

Classes

Name	Description
LayoutBuilderFieldSerializer	Subscribes to entity field serialization to handle layout builder fields.