FieldStorageDefinitionEvents.php

<?php

namespace Drupal\Core\Field;


/**
 * Contains all events thrown while handling field storage definitions.
 */
final class FieldStorageDefinitionEvents {
    
    /**
     * Name of the event triggered for field storage definition creation.
     *
     * This event allows you to respond to the creation of a new field storage
     * definition. The event listener method receives a
     * \Drupal\Core\Field\FieldStorageDefinitionEvent instance.
     *
     * @Event
     *
     * @see \Drupal\Core\Field\FieldStorageDefinitionEvent
     * @see \Drupal\Core\Field\FieldStorageDefinitionListener::onFieldStorageDefinitionCreate
     * @see \Drupal\Core\Field\FieldStorageDefinitionEventSubscriberTrait
     *
     * @var string
     */
    const CREATE = 'field_storage.definition.create';
    
    /**
     * Name of the event triggered for field storage definition update.
     *
     * This event allows you to respond anytime a field storage definition is
     * updated. The event listener method receives a
     * \Drupal\Core\Field\FieldStorageDefinitionEvent instance.
     *
     * @Event
     *
     * @see \Drupal\Core\Field\FieldStorageDefinitionEvent
     * @see \Drupal\Core\Field\FieldStorageDefinitionListener::onFieldStorageDefinitionUpdate()
     * @see \Drupal\Core\Field\FieldStorageDefinitionEventSubscriberTrait
     *
     * @var string
     */
    const UPDATE = 'field_storage.definition.update';
    
    /**
     * Name of the event triggered for field storage definition deletion.
     *
     * This event allows you to respond anytime a field storage definition is
     * deleted. The event listener method receives a
     * \Drupal\Core\Field\FieldStorageDefinitionEvent instance.
     *
     * @Event
     *
     * @see \Drupal\Core\Field\FieldStorageDefinitionEvent
     * @see \Drupal\Core\Field\FieldStorageDefinitionListener::onFieldStorageDefinitionDelete()
     * @see \Drupal\Core\Field\FieldStorageDefinitionEventSubscriberTrait
     *
     * @var string
     */
    const DELETE = 'field_storage.definition.delete';

}