class ExampleEventSubscriber in Webform Node Element 8

Class ExampleEventSubscriber.

This class shows how to use events to modify the node and display mode that the webform_node_element displays.

@package Drupal\webform_node_element_example

Hierarchy

• class \Drupal\webform_node_element_example\EventSubscriber\ExampleEventSubscriber implements \Symfony\Component\EventDispatcher\EventSubscriberInterface

1 string reference to 'ExampleEventSubscriber'

webform_node_element_example.services.yml in modules/webform_node_element_example/webform_node_element_example.services.yml

modules/webform_node_element_example/webform_node_element_example.services.yml

1 service uses ExampleEventSubscriber

webform_node_element_example.example_event_subscriber in modules/webform_node_element_example/webform_node_element_example.services.yml

Drupal\webform_node_element_example\EventSubscriber\ExampleEventSubscriber

File

modules/webform_node_element_example/src/EventSubscriber/ExampleEventSubscriber.php, line 16

Namespace

Drupal\webform_node_element_example\EventSubscriber

class ExampleEventSubscriber implements EventSubscriberInterface {

  /**
   * Set the events that we want to subscribe to.
   *
   * Tell Drupal that we're interested in subscribing to the
   * webform_node_element prerender event.
   *
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events[WebformNodeElementPreRender::PRERENDER][] = [
      'onWebformNodeElementPreRender',
      800,
    ];
    return $events;
  }

  /**
   * This is called whenever the webform_node_element prerender event occurs.
   *
   * For example purposes we tell the element to display node 1 using the
   * 'teaser' display mode.
   *
   * @param \WebformNodeElementPreRender $event
   *   The event that triggered this callback.
   */
  public function onWebformNodeElementPreRender(WebformNodeElementPreRender $event) {
    $event
      ->setNid(1);
    $event
      ->setDisplayMode('teaser');
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ExampleEventSubscriber::getSubscribedEvents	public static	function	Set the events that we want to subscribe to.
ExampleEventSubscriber::onWebformNodeElementPreRender	public	function	This is called whenever the webform_node_element prerender event occurs.