Drupal Event Subscribers

Example (Best Practice)

// src/EventSubscriber/MyEventSubscriber.php
namespace Drupal\my_module\EventSubscriber;

use Drupal\Core\Session\AccountProxyInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\RequestEvent;
use Symfony\Component\HttpKernel\KernelEvents;

final class MyEventSubscriber implements EventSubscriberInterface {

  public function __construct(
    private readonly AccountProxyInterface $currentUser,
  ) {}