Symfony: how to display a success message after logout

问题

In Symfony, after a user successfully log out, how to display a success message like "you have successfully logged out" ?

回答1:

1) Create a new service to handle the logout success event.

In services.yml add the service:

logout_success_handler:
    class: Path\To\YourBundle\Services\LogoutSuccessHandler
    arguments: ['@security.http_utils']

And add the class, replacing /path/to/your/login with the url of your login page (in the last line of the controller):

<?php

namespace Path\To\YourBundle\Services;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Security\Http\HttpUtils;
use Symfony\Component\Security\Http\Logout\LogoutSuccessHandlerInterface;

class LogoutSuccessHandler implements LogoutSuccessHandlerInterface
{
    protected $httpUtils;
    protected $targetUrl;

    /**
     * @param HttpUtils $httpUtils
     */
    public function __construct(HttpUtils $httpUtils)
    {
        $this->httpUtils = $httpUtils;

        $this->targetUrl = '/path/to/your/login?logout=success';
    }

    /**
     * {@inheritdoc}
     */
    public function onLogoutSuccess(Request $request)
    {
        $response = $this->httpUtils->createRedirectResponse($request, $this->targetUrl);

        return $response;
    }
}

2) Configure your security.yml to use the custom LogoutSuccessHandler just created:

firewalls:
    # ...
    your_firewall:
        # ...
        logout:
            # ...
            success_handler: logout_success_handler

3) In the twig template of your login page add:

{% if app.request.get('logout') == "success" %}
    <p>You have successfully logged out!</p>
{% endif %}

回答2:

Imho, there is a definitively simpler way. In security.yaml, define a route to redirect to after logout thanks to the target key :

security:
  firewalls:
    main:
     [...]
     logout:
       path: /logout
       target: /logout_message

Then in a controller (SecurityController.php is fine for this), define this action, wich only add the flash message and then redirect where you want (home in this exemple) :

/**
 * @Route("/logout_message", name="logout_message")
 */
public function logoutMessage()
{
    $this->addFlash('success', "You've been disconnected. Bye bye !");
    return $this->redirectToRoute('home');
}

来源：https://stackoverflow.com/questions/41062805/symfony-how-to-display-a-success-message-after-logout

标签

php

symfony

logout