[Symfony 5]注销后的确认信息

Question

在 Symfony 5 上，使用内置的登录系统，在注销后添加确认消息似乎是不可能的。我严格按照官方网站上描述的步骤操作。不幸的是，SecurityController 中的 logout 方法是无用的。我被直接重定向到登录页面。

在这里，您将拥有我的 security.yaml 文件：

security:
encoders:
    App\Entity\User:
        algorithm: auto


# https://symfony.com/doc/current/security.html#where-do-users-come-from-user-providers
providers:
    # used to reload user from session & other features (e.g. switch_user)
    app_user_provider:
        entity:
            class: App\Entity\User
            property: email
    # used to reload user from session & other features (e.g. switch_user)
firewalls:
    dev:
        pattern: ^/(_(profiler|wdt)|css|images|js)/
        security: false
    main:
        anonymous: lazy
        provider: app_user_provider
        guard:
            authenticators:
                - App\Security\LoginFormAuthenticator
        logout:
            path: logout
            target: login

        remember_me:
            secret:   '%kernel.secret%'
            lifetime: 604800 # 1 week in seconds
            path:     home
            always_remember_me: true

        # activate different ways to authenticate
        # https://symfony.com/doc/current/security.html#firewalls-authentication

        # https://symfony.com/doc/current/security/impersonating_user.html
        # switch_user: true

# Easy way to control access for large sections of your site
# Note: Only the *first* access control that matches will be used
access_control:
    - { path: ^/logout$, roles: IS_AUTHENTICATED_ANONYMOUSLY }
    - { path: ^/login$, roles: IS_AUTHENTICATED_ANONYMOUSLY }
    - { path: ^/, roles: IS_AUTHENTICATED_FULLY }
    - { path: ^/admin, roles: [IS_AUTHENTICATED_FULLY, ROLE_ADMIN] }
    - { path: ^/profile, roles: [IS_AUTHENTICATED_FULLY, ROLE_USER] }

和控制器：

<?php

namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Security\Http\Authentication\AuthenticationUtils;

class SecurityController extends AbstractController
{
    public function login(AuthenticationUtils $authenticationUtils): Response
    {
        if ($this->getUser()) {
            return $this->redirectToRoute('home');
        }

        // get the login error if there is one
        $error = $authenticationUtils->getLastAuthenticationError();

        return $this->render('security/login.html.twig', ['last_username' => null, 'error' => $error]);
    }

    public function logout()
    {
        throw new \Exception('Don\'t forget to activate logout in security.yaml');
    }
}

?>

感谢您的帮助 ！

Answer 1

对于想知道如何使用新的注销自定义来实现外部重定向的任何人：

如文档中所述，创建一个新的 CustomLogoutListener 类并将其添加到您的 services.yml 配置中。

CustomLogoutListener 类应该实现onSymfonyComponentSecurityHttpEventLogoutEvent方法，该方法将接收LogoutEvent作为参数，这将允许您设置响应：

namespace App\EventListener;

use JetBrains\PhpStorm\NoReturn;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Security\Http\Event\LogoutEvent;

class CustomLogoutListener
{
    /**
     * @param LogoutEvent $logoutEvent
     * @return void
     */
    #[NoReturn]
    public function onSymfonyComponentSecurityHttpEventLogoutEvent(LogoutEvent $logoutEvent): void
    {
        $logoutEvent->setResponse(new RedirectResponse('https://where-you-want-to-redirect.com', Response::HTTP_MOVED_PERMANENTLY));
    }
}

# config/services.yaml
services:
    # ...
    App\EventListener\CustomLogoutListener:
        tags:
            - name: 'kernel.event_listener'
              event: 'Symfony\Component\Security\Http\Event\LogoutEvent'
              dispatcher: security.event_dispatcher.main