class EventSubscriber in Drupal 8

Hierarchy

• class \Drupal\config_events_test\EventSubscriber implements \Symfony\Component\EventDispatcher\EventSubscriberInterface

1 string reference to 'EventSubscriber'

config_events_test.services.yml in core/modules/config/tests/config_events_test/config_events_test.services.yml

core/modules/config/tests/config_events_test/config_events_test.services.yml

1 service uses EventSubscriber

config_events_test.event_subscriber in core/modules/config/tests/config_events_test/config_events_test.services.yml

Drupal\config_events_test\EventSubscriber

File

core/modules/config/tests/config_events_test/src/EventSubscriber.php, line 10

Namespace

Drupal\config_events_test

class EventSubscriber implements EventSubscriberInterface {

  /**
   * The state key value store.
   *
   * @var \Drupal\Core\State\StateInterface
   */
  protected $state;

  /**
   * Constructs the Event Subscriber object.
   *
   * @param \Drupal\Core\State\StateInterface $state
   *   The state key value store.
   */
  public function __construct(StateInterface $state) {
    $this->state = $state;
  }

  /**
   * Reacts to config event.
   *
   * @param \Drupal\Core\Config\ConfigCrudEvent $event
   *   The configuration event.
   * @param string $name
   *   The event name.
   */
  public function configEventRecorder(ConfigCrudEvent $event, $name) {
    $config = $event
      ->getConfig();
    $this->state
      ->set('config_events_test.event', [
      'event_name' => $name,
      'current_config_data' => $config
        ->get(),
      'original_config_data' => $config
        ->getOriginal(),
      'raw_config_data' => $config
        ->getRawData(),
    ]);
  }

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events[ConfigEvents::SAVE][] = [
      'configEventRecorder',
    ];
    $events[ConfigEvents::DELETE][] = [
      'configEventRecorder',
    ];
    $events[ConfigEvents::RENAME][] = [
      'configEventRecorder',
    ];
    return $events;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
EventSubscriber::$state	protected	property	The state key value store.
EventSubscriber::configEventRecorder	public	function	Reacts to config event.
EventSubscriber::getSubscribedEvents	public static	function	Returns an array of event names this subscriber wants to listen to.
EventSubscriber::__construct	public	function	Constructs the Event Subscriber object.