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