3 namespace Drupal\Core\Entity;
6 * Helper methods for EntityTypeListenerInterface.
8 * This allows a class implementing EntityTypeListenerInterface to subscribe and
9 * react to entity type events.
11 * @see \Symfony\Component\EventDispatcher\EventSubscriberInterface
12 * @see \Drupal\Core\Entity\EntityTypeListenerInterface
14 trait EntityTypeEventSubscriberTrait {
17 * Gets the subscribed events.
20 * An array of subscribed event names.
22 * @see \Symfony\Component\EventDispatcher\EventSubscriberInterface::getSubscribedEvents()
24 public static function getEntityTypeEvents() {
25 $event = ['onEntityTypeEvent', 100];
26 $events[EntityTypeEvents::CREATE][] = $event;
27 $events[EntityTypeEvents::UPDATE][] = $event;
28 $events[EntityTypeEvents::DELETE][] = $event;
33 * Listener method for any entity type definition event.
35 * @param \Drupal\Core\Entity\EntityTypeEvent $event
36 * The field storage definition event object.
37 * @param string $event_name
40 public function onEntityTypeEvent(EntityTypeEvent $event, $event_name) {
41 switch ($event_name) {
42 case EntityTypeEvents::CREATE:
43 $this->onEntityTypeCreate($event->getEntityType());
46 case EntityTypeEvents::UPDATE:
47 $this->onEntityTypeUpdate($event->getEntityType(), $event->getOriginal());
50 case EntityTypeEvents::DELETE:
51 $this->onEntityTypeDelete($event->getEntityType());
59 public function onEntityTypeCreate(EntityTypeInterface $entity_type) {
65 public function onEntityTypeUpdate(EntityTypeInterface $entity_type, EntityTypeInterface $original) {
71 public function onEntityTypeDelete(EntityTypeInterface $entity_type) {