Symfony 2 - Setting a Flash Message outside of Controller
symfony
Solution
You should inject the services for session and router into the LogoutListener and use them to perform these tasks. This is the way to do it in yml:
logout_listener:
class: ACME\MyBundle\Security\Listeners\LogoutListener
arguments: [@security.context, @router, @session]
Then in your class you write:
class LogoutListener implements LogoutSuccessHandlerInterface
{
private $security;
private $router;
private $session;
public function __construct(SecurityContext $security, Router $router, Session $session)
{
$this->security = $security;
$this->router = $router;
$this->session = $session;
}
[...]
When you want to use the session now you can just say:
$this->session->getFlashBag()->add('notice', 'You have been successfully been logged out.');
And in the same way you can use the router service to generate routes.
Problem
I have a logout Listener where I'd like to set a flash message showing a logout confirmation message. ``` namespace Acme\MyBundle\Security\Listeners; use Symfony\Component\Security\Http\Logout\LogoutSuccessHandlerInterface; use Symfony\Component\Security\Core\SecurityContext; use Symfony\Component\HttpFoundation\Response; use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\RedirectResponse; class LogoutListener implements LogoutSuccessHandlerInterface { private $security; public function __construct(SecurityContext $security) { $this->security = $security; } public function onLogoutSuccess(Request $request) { $request->get('session')->getFlashBag()->add('notice', 'You have been successfully been logged out.'); $response = new RedirectResponse('login'); return $response; } } ``` Here is my services.yml (as it pertains to this): ``` logout_listener: class: ACME\MyBundle\Security\Listeners\LogoutListener arguments: [@security.context] ``` This is generating an error: ``` Fatal error: Call to a member function getFlashBag() on a non-object ``` How do I set a flashBag message in this context? Also, how do get access to the router so I can generate the url (via $this->router->generate('login')) instead of passing in a hard-coded url? Resolution Note To get the flash to work, you must tell your security.yml config not invalidate the session on logout; otherwise, the session will be destroyed and your flash will never appear. ``` logout: path: /logout success_handler: logout_listener invalidate_session: false ```