Controller as services with Property Injection

gistfile1.php

<?php
class UserController
{
    /**
     * @Inject
     * @var RouterInterface
     */
    private $router;

    /**
     * @Inject
     * @var FormFactoryInterface 
     */
    private $formFactory;

    public function createForm($type, $data, $options)
    {
        // $this->formFactory->...
    }
}

Read the article here: http://en.mnapoli.fr/controllers-as-services/