PreExecute() function in symfony2 - symfony

Question

I developed an application using symfony2, I want to know how to write preExecute() function symfony2 for following case:
when I log-in into the system; it redirect me on user profile section when I log-out from same screen, It killed session and redirect me on login screen, but when I hit browser's back button then it will redirect me on profile screen, which shows me all user information but when I click for next process from same screen then I redirect me on login page.
I just want to add preExecute function like symfony1.4 for this case, so I checked session and if it is null then it will redirect me on login page if I hit browser's back button when I alrady log-out from the system.
I already added following code in profileController.php files,
public function indexAction() {
$session = $this->get('request')->getSession();
$userId = $session->get('id');
if ($userId == 0 || $userId == '') {
return $this->redirect($this->generateUrl('_security_login'));
} else {
//my code
}
}
//logout action
public function dologoutAction(){
$this->get('security.context')->setToken(null);
$this->get('request')->getSession()->invalidate();
$this->container->get('request')->getSession('session')->clear();
return $this->redirect($this->generateUrl('_security_login'));
}
if there is any other way to handle this case then please help me for the same.
Thank you.

Answer 1

Just require the ROLE_USER role on the profile action and the firewall will do the redirect-to-the-login-form-and-then-redirect-back stuff:
/**
* #Secure("ROLE_USER")
*/
public function profileAction()
{
// ...
}
For more information read the Security chapter of the Symfony book.