Tutorial 3 Login Application using Symfony2 part 2

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Hi
In this tutorial about Login Application using Symfony2 part2

The controller

<?php namespace DWMUserBundleController; use SymfonyBundleFrameworkBundleControllerController; use SymfonyComponentHttpFoundationRequest; use DWMUserBundleEntityUser; use SymfonyComponentHttpFoundationSession; class DefaultController extends Controller { public function indexAction(Request $request) { $session = $this->getRequest()->getSession(); $em=$this->getDoctrine()->getManager(); $repository =$em->getRepository(DWMUserBundle:User); if ($session->has(login)) { $login = $session->get(login); $email = $login->getEmail(); $password = $login->getPassword(); $user = $repository->findOneBy(array(email => $email, password = > $password)); return $this->render(DWMUserBundle:Default:home.html.twig,array(user => $user)); } else return $this->render(DWMUserBundle:Default:index.html.twig); } public function SigninAction(Request $request) { $session = $this->getRequest()->getSession(); $em=$this->getDoctrine()->getManager(); $repository =$em->getRepository(DWMUserBundle:User); if($request->getMethod()==POST) { $session->clear(); $email=$request->get(email); $password=$request->get(password); $user=$repository->findOneBy(array(email=>$email,password=>$password)); if ($user) //if user has values { $login = new User(); $login->setEmail($email); $login->setPassword($password); $session->set(login, $login); return $this->render(DWMUserBundle:Default:home.html.twig, array(user => $user)); } else//if login is incorrect return $this->render(DWMUserBundle:Default:signin.html.twig); } else //if $request->getMethod()!=POST { if ($session->has(login)) { $login = $session->get(login); $email = $login->getEmail(); $password = $login->getPassword(); $user = $repository->findOneBy(array(email => $email, password => $password)); return $this->render(DWMUserBundle:Default:home.html.twig,array(user => $user)); } return $this->render(DWMUserBundle:Default:signin.html.twig); } } public function logoutAction(Request $request) { $session=$this->getRequest()->getSession(); $session->clear(); return $this->redirect (../web/); } }

the routing.yml
dwm_user_homepage: path: / defaults: { _controller: DWMUserBundle:Default:index } dwm_user_signin: path: /signin defaults: { _controller: DWMUserBundle:Default:Signin } dwm_user_logout: path: /logout defaults: { _controller: DWMUserBundle:Default:logout }