class ExampleEntityExtraFieldInfoSubscribers in Hook Event Dispatcher 8.2

Class ExampleEntityExtraFieldInfoSubscribers.

Don't forget to define your class as a service and tag it as an "event_subscriber":

services: hook_event_dispatcher.example_entity_extra_field_info_subscribers: class: Drupal\hook_event_dispatcher\ExampleEntityExtraFieldInfoSubscribers tags:

• { name: event_subscriber }

Hierarchy

• class \Drupal\hook_event_dispatcher\ExampleEntityExtraFieldInfoSubscribers implements \Symfony\Component\EventDispatcher\EventSubscriberInterface

File

examples/ExampleEntityExtraFieldInfoSubscribers.php, line 21

Namespace

Drupal\hook_event_dispatcher

class ExampleEntityExtraFieldInfoSubscribers implements EventSubscriberInterface {

  /**
   * Entity extra field info.
   *
   * @param \Drupal\core_event_dispatcher\Event\Entity\EntityExtraFieldInfoEvent $event
   *   The event.
   */
  public function fieldInfo(EntityExtraFieldInfoEvent $event) : void {

    // Set the field info directly.
    $fieldInfo = [];
    $event
      ->setFieldInfo($fieldInfo);
    $entityType = 'node';
    $bundle = 'page';
    $fieldName = 'field_test';
    $testFieldInfo = [];

    // Add a single display info.
    $event
      ->addDisplayFieldInfo($entityType, $bundle, $fieldName, $testFieldInfo);

    // Add a single form info.
    $event
      ->addFormFieldInfo($entityType, $bundle, $fieldName, $testFieldInfo);
  }

  /**
   * Entity extra field info.
   *
   * @param \Drupal\core_event_dispatcher\Event\Entity\EntityExtraFieldInfoAlterEvent $event
   *   The event.
   */
  public function fieldInfoAlter(EntityExtraFieldInfoAlterEvent $event) : void {
    $fieldInfo =& $event
      ->getFieldInfo();

    // Manipulate the field info.
    $fieldInfo['node']['test']['display']['field_test']['weight'] = -20;
  }

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() : array {
    return [
      HookEventDispatcherInterface::ENTITY_EXTRA_FIELD_INFO => 'fieldInfo',
      HookEventDispatcherInterface::ENTITY_EXTRA_FIELD_INFO_ALTER => 'fieldInfoAlter',
    ];
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ExampleEntityExtraFieldInfoSubscribers::fieldInfo	public	function	Entity extra field info.
ExampleEntityExtraFieldInfoSubscribers::fieldInfoAlter	public	function	Entity extra field info.
ExampleEntityExtraFieldInfoSubscribers::getSubscribedEvents	public static	function	Returns an array of event names this subscriber wants to listen to.