无法在Symfony2中使用事件侦听器将参数获取到控制器

Question

I am currently using the Symfony2 event listener to change the controller to a different one based on a users authentication status. I get the listener to set the new controller but it is instantiated without the container parameter (ie $this->container returns null).

Is there anyway to pass the container on to the controller I am changing to?

class AuthenticationListener
{
  public function onController(FilterControllerEvent $event)
  {
    $request = $event->getRequest();
    $session = $request->getSession();
    if (!$session->has('authenticated') || $session->get('authenticated') === false)
    {
      $controller = $event->getController();

      if (!($controller[0] instanceof AuthenticateController) && !($controller[0] instanceof ExceptionController))
      {
        $event->setController(array(new AuthenticateController(), 'loginAction'));
      }
    }
  }
}

Answer 1

The container is not set, when you create the controller automatically. Call setContainer after constructing the controller. Afterwards you can pass it to the event.

Answer 2

In this case AuthenticationListener its just a class

if you want to use $this->container in this class you must do like this:

class BeforeControllerListener extends ContainerAware
{
...
}

and in config.yml

core.listener.before_controller:
    class: App\YourBundle\EventListener\YourListener
    tags: [ {name: kernel.event_listener, event: kernel.controller, method: onKernelController}]
    calls:
        - [ setContainer,[ @service_container ]]