Question

The UserChecker in Symfony2 is a necessary class for user authentication.

Let’s suppose you need to authenticate a user just inside a controller, you should define a function like the following:

protected function authenticateUser(User $user) {                
   $user_checker = ...//Get here the user checker
    try {
        $user_checker->checkPostAuth($user);
    } catch (AccountStatusException $e) {
        return;
    }

    $providerKey = $this->container->getParameter('firewall_name');
    $token = new UsernamePasswordToken($user, null, $providerKey, $user->getRoles());
    $this->container->get('security.context')->setToken($token);   
}

Notice that the UserChecker is defined as a non-public service in Symfony2:

  <service id="security.user_checker" class="%security.user_checker.class%" public="false" />

How to get the UserChecker in a controller?

Thanks in advance

Answer 1

You can “get” a private service by using an alias. See:

http://symfony.com/doc/current/components/dependency_injection/advanced.html