Entity Events

Events and Events Subscribers.

Events

NameDescription
EntityEvents::ENTITY_ACTIONWhen an entity is inserted, updated or deleted.
EntityEvents::ENTITY_REVALIDATEDWhen an entity is revalidated

EventSubscribers

Entity insert, update or delete

Create an event subscriber when an entity is inserted, updated or deleted: EntityEvents::ENTITY_ACTION.

custom_module/src/EventSubscriber/EntityActionEventSubscriber.php

<?php


namespace Drupal\custom_module\EventSubscriber;


use Drupal\next\Event\EntityActionEvent;
use Drupal\next\Event\EntityEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;


/**
 * Defines an event subscriber for entity action events.
 */
class EntityActionEventSubscriber implements EventSubscriberInterface {


  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events[EntityEvents::ENTITY_ACTION] = ['onAction'];
    return $events;
  }


  /**
   * Responds to the action event.
   *
   * @param \Drupal\next\Event\EntityActionEvent $event
   *   The event.
   */
  public function onAction(EntityActionEvent $event) {
    // Get the action: insert, updated or delete.
    $action = $event->getAction();
  }


}

Revalidated

Create an event subscriber when an entity is revalidated (post revalidation): EntityEvents::ENTITY_REVALIDATED.

custom_module/src/EventSubscriber/EntityRevalidatedEventSubscriber.php

<?php


namespace Drupal\next_tests\EventSubscriber;


use Drupal\next\Event\EntityEvents;
use Drupal\next\Event\EntityRevalidatedEventInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;


/**
 * Defines an event subscriber for entity revalidated events.
 */
class EntityRevalidatedEventSubscriber implements EventSubscriberInterface {


  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events[EntityEvents::ENTITY_REVALIDATED] = ['onRevalidated'];
    return $events;
  }


  /**
   * Responds to entity revalidated.
   *
   * @param \Drupal\next\Event\EntityRevalidatedEventInterface $event
   *   The event.
   */
  public function onRevalidated(EntityRevalidatedEventInterface $event) {
    if ($event->isRevalidated()) {
     // Do something if entity has been successfully revalidated.
    }
  }


}
Revalidator