class EventSubscriber in Drupal 8

An event subscriber that does different things depending on whether classes exist.

Hierarchy

• class \Drupal\module_install_class_loader_test1\EventSubscriber implements \Symfony\Component\EventDispatcher\EventSubscriberInterface

1 string reference to 'EventSubscriber'

module_install_class_loader_test1.services.yml in core/modules/system/tests/modules/module_install_class_loader_test1/module_install_class_loader_test1.services.yml

core/modules/system/tests/modules/module_install_class_loader_test1/module_install_class_loader_test1.services.yml

1 service uses EventSubscriber

module_install_class_loader_test1.event_subscriber in core/modules/system/tests/modules/module_install_class_loader_test1/module_install_class_loader_test1.services.yml

Drupal\module_install_class_loader_test1\EventSubscriber

File

core/modules/system/tests/modules/module_install_class_loader_test1/src/EventSubscriber.php, line 11

Namespace

Drupal\module_install_class_loader_test1

class EventSubscriber implements EventSubscriberInterface {

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events = [];

    // If the autoloader is not fixed during module install when the modules
    // module_install_class_loader_test1 and module_install_class_loader_test2
    // are enabled in the same request the class_exists() will cause a crash.
    // This is because \Composer\Autoload\ClassLoader maintains a negative
    // cache.
    if (class_exists('\\Drupal\\module_install_class_loader_test2\\EventSubscriber')) {
      $events = [];
    }
    return $events;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
EventSubscriber::getSubscribedEvents	public static	function	Returns an array of event names this subscriber wants to listen to.