BaseOauthServerBundle/EventListener/OAuthEventListener.php

<?php

namespace Base\OAuthServerBundle\EventListener;

use FOS\OAuthServerBundle\Event\OAuthEvent;

class OAuthEventListener
{

    public function onPreAuthorizationProcess(OAuthEvent $event)
    {
        if ($user = $event->getUser()) {
            $event->setAuthorizedClient($event->getClient());
        }
    }

    public function onPostAuthorizationProcess(OAuthEvent $event)
    {
        if ($event->isAuthorizedClient()) {
            if (null !== $client = $event->getClient()) {
                $user = $event->getUser();
            }
        }
    }

}