controller.php

<?php
/**
 * @Route("/demo/secured")
 */
class SecuredController extends Controller
{
    /**
     * @Route("/login", name="_demo_login")
     * @Template()
     */
    public function loginAction()
    {
        if ($this->get('request')->attributes->has(SecurityContext::AUTHENTICATION_ERROR)) {
            $error = $this->get('request')->attributes->get(SecurityContext::AUTHENTICATION_ERROR);
        } else {
            $error = $this->get('request')->getSession()->get(SecurityContext::AUTHENTICATION_ERROR);
        }

        return array(
            'last_username' => $this->get('request')->getSession()->get(SecurityContext::LAST_USERNAME),
            'error'         => $error,
        );
    }
}

/**
 * @Route("/demo/secured")
 */
class SecuredController extends Controller
{
    /**
     * @Route("/login", name="_demo_login")
     * @Template()
     */
    public function loginAction()
    {
        if ($this->getRequestService()->attributes->has(SecurityContext::AUTHENTICATION_ERROR)) {
            $error = $this->getRequestService()->attributes->get(SecurityContext::AUTHENTICATION_ERROR);
        } else {
            $error = $this->getRequestService()->getSession()->get(SecurityContext::AUTHENTICATION_ERROR);
        }

        return array(
            'last_username' => $this->getRequestService()->getSession()->get(SecurityContext::LAST_USERNAME),
            'error'         => $error,
        );
    }
	/**
	 * 
	 * @return Symfony\Component\HttpFoundation\Request
	 */
	public function getRequestService() {
		return $this->request;
	}

}