Silex automatic post-registration user authentication

app.php

<?php
$app['security.firewalls'] = array(
    'user_firewall' => array(
        'pattern' => new \Application\UserRequestMatcher($app['request']),
        'form' => array('login_path' => '/login', 'check_path' => '/authenticate'),
        'logout' => array('logout_path' => '/logout'),
        'users' => $app->share(function () use ($app)
        {
            return new \Application\UserProvider($app);
        }),
    ),
);

//...
$app->post(
    '/register',
    function (\Silex\Application $app)
    {
		$form->bind($app['request']);
		$data = $form->getData();

		$UserModel = new \Application\UserModel($app);
		$UserModel->create($data);
		$User = new \Symfony\Component\Security\Core\User\User($data['username'], $data['password'], array('ROLE_USER'));
		$app['security']->setToken(new \Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken($User, $User->getPassword(), 'user_firewall', array('ROLE_USER')));
		return $app->redirect('/');
	}
);

Thanks a bunch for this.