3 namespace Drupal\Core\Field;
6 * Helper methods for FieldStorageDefinitionListenerInterface.
8 * This allows a class implementing FieldStorageDefinitionListenerInterface to
9 * subscribe and react to field storage definition events.
11 * @see \Symfony\Component\EventDispatcher\EventSubscriberInterface
12 * @see \Drupal\Core\Field\FieldStorageDefinitionListenerInterface
14 trait FieldStorageDefinitionEventSubscriberTrait {
17 * Returns the subscribed events.
20 * An array of subscribed event names.
22 * @see \Symfony\Component\EventDispatcher\EventSubscriberInterface::getSubscribedEvents()
24 public static function getFieldStorageDefinitionEvents() {
25 $event = ['onFieldStorageDefinitionEvent', 100];
26 $events[FieldStorageDefinitionEvents::CREATE][] = $event;
27 $events[FieldStorageDefinitionEvents::UPDATE][] = $event;
28 $events[FieldStorageDefinitionEvents::DELETE][] = $event;
33 * Listener method for any field storage definition event.
35 * @param \Drupal\Core\Field\FieldStorageDefinitionEvent $event
36 * The field storage definition event object.
37 * @param string $event_name
40 public function onFieldStorageDefinitionEvent(FieldStorageDefinitionEvent $event, $event_name) {
41 switch ($event_name) {
42 case FieldStorageDefinitionEvents::CREATE:
43 $this->onFieldStorageDefinitionCreate($event->getFieldStorageDefinition());
46 case FieldStorageDefinitionEvents::UPDATE:
47 $this->onFieldStorageDefinitionUpdate($event->getFieldStorageDefinition(), $event->getOriginal());
50 case FieldStorageDefinitionEvents::DELETE:
51 $this->onFieldStorageDefinitionDelete($event->getFieldStorageDefinition());
59 public function onFieldStorageDefinitionCreate(FieldStorageDefinitionInterface $storage_definition) {
65 public function onFieldStorageDefinitionUpdate(FieldStorageDefinitionInterface $storage_definition, FieldStorageDefinitionInterface $original) {
71 public function onFieldStorageDefinitionDelete(FieldStorageDefinitionInterface $storage_definition) {