EventSubscriber.php in Drupal 9

Namespace

Drupal\module_install_class_loader_test1

File

core/modules/system/tests/modules/module_install_class_loader_test1/src/EventSubscriber.php

<?php

namespace Drupal\module_install_class_loader_test1;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**
 * An event subscriber that does different things depending on whether classes
 * exist.
 */
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;
  }

}

Classes

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