Symfony2 call subscriber doctrine and other

Question

I create a subscriber and register a new service, what I do : https://gist.github.com/Draeli/2c591c16409a5664ae58

<?php
namespace My\BlogBundle\Listener;

use Doctrine\ORM\Events;
use Symfony\Component\DependencyInjection\ContainerInterface;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;

class BlogArticleDetailListener implements EventSubscriberInterface
{

    /**
     * @var ContainerInterface
     */
    protected $container;

    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }

    static public function getSubscribedEvents()
    {
        return array(
            'doctrine.event_subscriber' => array(
                array(Events::prePersist, 0),
                array(Events::preUpdate, 0),
            ),
        );
    }

    public function prePersist(FilterResponseEvent $event)
    {
        var_dump('prePersist');die;
    }

    public function preUpdate(FilterResponseEvent $event)
    {
        var_dump('preUpdate');die;
    }
}

services:
    my_blog.listener.blog_article_detail:
        class: My\BlogBundle\Listener\BlogArticleDetailListener
        arguments: ["@service_container"]
        tags:
            - { name: kernel.event_subscriber }

But in this case methods prePersist and preUpdate in spite of I persist objects, like if Doctrine didn't dispatch. Someone know what is strong in what I do ?

(For explanation, now I register only doctrine event but after I will register more from same place)

score 1 · Answer 1 · answered Jul 19 '14 at 16:36

Service

At present the listener is listening to event being dispatched using the Symfony kernel event dispatcher whereas you should be listening to the Doctrine event dispatcher.

Your service...

services:
    my_blog.listener.blog_article_detail:
        class: My\BlogBundle\Listener\BlogArticleDetailListener
        arguments: ["@service_container"]
        tags:
            - { name: kernel.event_subscriber }

Should have the tag doctrine.event_subscriber rather than the kernel.

Subscriber

As you are creating a Doctrine subscriber rather than a Symfony kernel subscriber you should implementing \Doctrine\Common\EventSubscriber, meaning the getSubscribedEvents method shouldn't be static.

Currently your subscriber is listening for an event called doctrine.event_subscriber rather than listening to the Doctrine events.

You should actually just be listening to the Doctrine events using...

public function getSubscribedEvents()
{
    return array(
        Events::prePersist,    // I'm not sure about setting
        Events::preUpdate,     // the priorities to be honest
    );
}

With the Doctrine events you won't be getting FilterResponseEvent as Doctrine dispatches with specific argument objects (Doctrine\Common\Persistence\Event\LifecycleEventArgs mostly) on events. For more info on the arguments (and the events) you can view the documentation.

It was my first approch and works but this listener is suppose to be for one kind of object and not only register doctrine event and when I try to modify my code all fall :( — Draeli, Jul 19 '14 at 16:51
I don't get you. Are you trying to combine doctrine and Symfony events in the same class? — qooplmao, Jul 19 '14 at 17:09
I try to do something like that yes : http://symfony.com/doc/current/components/event_dispatcher/introduction.html#using-event-subscribers — Draeli, Jul 19 '14 at 17:16
I don't think you can combine the 2 different event dispatchers with a subscriber. The thing you have linked to is just listening to the Symfony dispatcher. — qooplmao, Jul 19 '14 at 17:42

Symfony2 call subscriber doctrine and other

1 Answers1