LocaleTranslationCacheTag.php in Drupal 8

Namespace

Drupal\locale\EventSubscriber

File

core/modules/locale/src/EventSubscriber/LocaleTranslationCacheTag.php

<?php

namespace Drupal\locale\EventSubscriber;

use Drupal\Core\Cache\CacheTagsInvalidatorInterface;
use Drupal\locale\LocaleEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**
 * A subscriber invalidating cache tags when translating a string.
 */
class LocaleTranslationCacheTag implements EventSubscriberInterface {

  /**
   * The cache tags invalidator.
   *
   * @var \Drupal\Core\Cache\CacheTagsInvalidatorInterface
   */
  protected $cacheTagsInvalidator;

  /**
   * Constructs a LocaleTranslationCacheTag object.
   *
   * @param \Drupal\Core\Cache\CacheTagsInvalidatorInterface $cache_tags_invalidator
   *   The cache tags invalidator.
   */
  public function __construct(CacheTagsInvalidatorInterface $cache_tags_invalidator) {
    $this->cacheTagsInvalidator = $cache_tags_invalidator;
  }

  /**
   * Invalidate cache tags whenever a string is translated.
   */
  public function saveTranslation() {
    $this->cacheTagsInvalidator
      ->invalidateTags([
      'rendered',
      'locale',
      'library_info',
    ]);
  }

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events[LocaleEvents::SAVE_TRANSLATION][] = [
      'saveTranslation',
    ];
    return $events;
  }

}

Classes

Name	Description
LocaleTranslationCacheTag	A subscriber invalidating cache tags when translating a string.