I'm working on Symfony 2.3 and I declared a new route and new controller, but when I call this controller from the browser I get this error:

The controller for URI "/user/1" is not callable. in /dev.mydomain.org/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php at line 82

This is my simple route configuration:

user_homepage:
    pattern:  /user
    defaults: { _controller: UserBundle:Default:index }
    
user_show:
    pattern:  /user/{id}
    defaults: { _controller: UserBundle:Default:show }
    requirements:
        id:  \d+

And this is my very simple controller:

public function showUserAction($id)
{        
    return $this->render('UserBundle:Default:show.html.twig', array());
}

What is wrong?

symfony routes
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