Symfony 2: Get Security Context Outside of Controller - php

Question

I am trying to write an event listener that needs access to the users permission level. In the controller I use the following code
Code:
$securityContext = $this->container->get('security.context');
if($securityContext->isGranted('ROLE_USER')){
//Do Something
}
But outside of a controller I can't work out how to get the security context. Is it possible?

Answer 1

The best way to do this is using (as phpisuber said) dependency injection through the Service Container. But, instead of injecting the entire container (which is considered bad practice as it makes your entire class less testable and breaks loose coupling) you should inject the security.context service like so:
acme_foo.bar_service:
class: %acme_foo.bar_service.class%
arguments:
- #security.context
Your service can be something like this:
<?php
namespace Acme\FooBundle\Service;
use Symfony\Component\Security\Core\SecurityContext;
class BarService
{
/**
* #var SecurityContext
*/
protected $context;
/**
* #param SecurityContext $context
*/
public function __construct($context)
{
$this->context = $context;
}
public function doSomething()
{
return $this->context->isGranted('ROLE_USER');
}
}

Answer 2

There is two ways to get it outside a controller:
Dependency Injection:
This is the correct way to do it, all you need is in the documentation here.
mybundle.model.mymodel:
class: %mybundle.model.myclass%
arguments: [#servicecontainer]
Quick and Dirty:
global $kernel;
$securityContext = $kernel->getContainer()->get('security.context');

Answer 3

I know this post is a little dated, but it still came up as one of the first results on Google.
The answers in this post reference the SecurityContext class, which is no longer supported as of Symfony 2.6. The accepted answer for this post is misleading because of the class deprecation.
Try this code from this answer:
use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use YourNameSpace\UserBundle\Entity\User;
class LoginController extends Controller{
public function registerAction()
{
$user = //Handle getting or creating the user entity likely with a posted form
$token = new UsernamePasswordToken($user, null, 'main', $user->getRoles());
$this->get('security.token_storage')->setToken($token);
$this->get('session')->set('_security_main', serialize($token));
}
}