Autowiring controller args

FooController.php

<?php

namespace AppBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Psr\Log\LoggerInterface;

/**
 * This class is now a service, so you can use normal __construct DI if you want!
 */
class FooController extends Controller
{
    /**
     * @Route("/cool")
     *
     * In the controller, type-hint an arg and Symfony will pass you the matching service
     */
    public function doCoolStuffAction(LoggerInterface $logger)
    {
        $logger->info('Huh, that was easy');

        // even though your controller is now a service, you can still use
        // $this->container->get('some_other_service');
        // if you want to, just like before
    }
}

services.yml

services:
    _defaults:
        autowire: true
        # auto-tags services based on their class whenever it makes sense
        autoconfigure: true

    # registers all classes found in these directories
    AppBundle\:
        resource: '../../src/AppBundle/{Controller,Service,OtherDir}'