Add a default role during user registration with FOSUserBundle

Question

Version : Symfony 2.2

I'm trying to add a default role when a user register on my website. I use FOSUserBundle and i see that when a user register the role field is empty in a database. I begin with this huge bundle and it's not very easy to understand. So i read all the documentation and i'm not sur what to do.

For now, i create an Event to add this role dynamically, but it doesn't work (i have no error but my database is still empty) I'm not even sur this is the good way to do that ?

My Event :

use FOS\UserBundle\FOSUserEvents;
use FOS\UserBundle\Event\FormEvent;
use Symfony\Component\DependencyInjection\Container;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

class AddDefaultRoleListener implements EventSubscriberInterface {

  private $container;

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

  /**
   * {@inheritDoc}
   */
  public static function getSubscribedEvents()
  {
    return array(
        FOSUserEvents::REGISTRATION_SUCCESS => 'onAddDefaultRoleSuccess',
    );
  }

  public function onAddDefaultRoleSuccess(FormEvent $event)
  {
    $doctrine = $this->container->get('doctrine');
    $em = $doctrine->getManager();

    $user = $event->getForm()->getData();
    $user->addRole('ROLE_USER');
    //$user->setRoles(array('ROLE_USER'));

    $em->persist($user);
  }
}

As you see i create a simple event which listen on REGISTRATION_SUCCESS, but nothing seems to work. It's my first try with Events and services. So if someone has an advice, i'll take it :)

Answer 1

The recommended way to do it as indicated by a main contributor to the FOSUserBundle (in the comment here linked) is to register an Event Listener on the REGISTRATION_SUCCESS event and use the $event->getForm()->getData() to access the user and modify it. Following those guidelines, I created the following listener (which works!):

<?php

// src/Acme/DemoBundle/EventListener/RegistrationListener.php

namespace Acme\DemoBundle\EventListener;

use FOS\UserBundle\FOSUserEvents;
use FOS\UserBundle\Event\FormEvent;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**
 * Listener responsible for adding the default user role at registration
 */
class RegistrationListener implements EventSubscriberInterface
{
    public static function getSubscribedEvents()
    {
        return array(
            FOSUserEvents::REGISTRATION_SUCCESS => 'onRegistrationSuccess',
        );
    }

    public function onRegistrationSuccess(FormEvent $event)
    {
        $rolesArr = array('ROLE_USER');

        /** @var $user \FOS\UserBundle\Model\UserInterface */
        $user = $event->getForm()->getData();
        $user->setRoles($rolesArr);
    }
}

Also, the service needs to be registered as follows:

// src/Acme/DemoBundle/Resources/config/services.yml
services:
    demo_user.registration_listener:
        class: Acme\DemoBundle\EventListener\RegistrationListener
        arguments: []
        tags:
            - { name: kernel.event_subscriber }

Notice that adding a default role in the User class __construct() may have some issues as indicated in this other answer.