Symfony2: Inject current user in Service

Question

I am trying to inject the currently logged in user into a service. My goal is to extend some twig functionality to output it based on user preferences. In this example I wan

Answer 1

services.yml

my_service:
    class: ...
    arguments:
        - "@=service('security.token_storage').getToken().getUser()"

Service.php

protected $currentUser;

public function __construct($user)
{
    $this->currentUser = $user;
}

http://symfony.com/doc/current/book/service_container.html#using-the-expression-language