How to inject controller into EventDispatcher in Symfony2 - php

Question

I want to do some post-processing after sending a response object in my Symfony controller. Problem is, the post-processing requires other methods contained in my controller object. I'd like to do something like this:
public function testAction() {
$dispatcher = new EventDispatcher();
$dispatcher->addListener('kernel.terminate', function (Event $event) {
$controller->get('logger');
$logger->info('hello');
});
return new Response();
}
How can I inject the $controller variable into my kernel.terminate post-processing?

Answer 1

it seems you need only the container in your service. To get the container injected into your event listener I prefer to create a separate EventListener which you have to register in your container see code:
First create event listener class:
<?php
namespace Acme\DemoBundle\Listener;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\DependencyInjection\ContainerInterface;
class RequestListener
{
protected $container;
public function __construct(ContainerInterface $container)
{
$this->container = $container;
}
public function onKernelRequest(GetResponseEvent $event)
{
$request = $event->getRequest();
$logger = $this->container->get('logger')->getToken();
$logger->info('.....');
}
}
As you can see, we have now the service container injected and we are able to use it.
Next you have to register the service and inject the service container:
services:
acme.demo.listener.request:
class: Acme\DemoBundle\Listener\RequestListener
arguments: [ #service_container ]
tags:
- { name: kernel.event_listener, event: kernel.request, method: onKernelRequest }
Notice in your case you have to select the event you wanna inject to. In my case I used the kernel.request event. You have to select the kernel.terminate event.
That can also be helpful: http://symfony.com/doc/current/cookbook/service_container/event_listener.html