我正在学习为 symfony 4 设计的优秀法语课程，并开始适应 symfony 5。
当用户使用管理员/注销路由时，我正在尝试创建重定向路由。根据Symfony 5 官方文档，我根本不需要在注销功能中写任何东西。
这是关于为管理员用户和没有权限的用户创建防火墙。实际上，我启用了一条让管理员注销的路由，但它被解释而不是通过 security.yaml 进程注销管理员......原因是我在主防火墙中被阻止而不是进入管理员防火墙。结果，Symfony在屏幕截图中抛出了这个错误，说：“控制器必须返回一个“Symfony\Component\HttpFoundation\Response”对象，但它返回 null。你是否忘记在控制器的某处添加 return 语句？”。
我想真正的问题是：我可以切换防火墙吗？我的目标只是为普通用户和管理员用户提供正确的连接形式，以及传达他们自己的重定向路由的正确断开路由。你有什么主意吗 ？我认为每当我使用 /admin/* 路由时都会选择管理防火墙...感谢您的帮助！
我将向您展示我的 security.yaml、routes.yaml、检查管理员登录表单的控制器、处理管理员/注销路由的控制器以及我的管理员注销按钮所在的树枝模板。
就在展示之前，我让你知道我可以同时登录管理员和普通用户。只有管理员注销路由被破坏。下面，是文件。
1/5 安全.yaml ：
security:
encoders:
App\Entity\User:
algorithm: auto
# https://symfony.com/doc/current/security.html#where-do-users-come-from-user-providers
providers:
in_memory: { memory: null }
in_database:
entity:
class: App\Entity\User
property: email
firewalls:
dev:
pattern: ^/(_(profiler|wdt)|css|images|js)/
security: false
admin:
pattern: ˆ/admin
anonymous: true
provider: in_database
form_login:
login_path: admin_account_login
check_path: admin_account_login
logout:
path: app_admin_account_logout
target: homepage
guard:
authenticators:
- App\Security\LoginFormAuthenticator
main:
context: normal
anonymous: true
provider: in_database
form_login:
login_path: account_login
check_path: account_login
logout:
path: account_logout
target: account_login
guard:
authenticators:
- App\Security\LoginFormAuthenticator
- App\Security\AdminLoginFormAuthenticator
entry_point: App\Security\LoginFormAuthenticator
# 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: '^/admin/login', roles: IS_AUTHENTICATED_ANONYMOUSLY }
- { path: '^/admin', roles: ROLE_ADMIN }
# - { path: ^/profile, roles: ROLE_USER }
我的 routes.yaml 处理 app_admin_account_logout 路由：
app_admin_account_logout:
path: /admin/logout
methods: GET
3/5 AdminLoginFormAuthenticator.php 检查登录表单
<?php
namespace App\Security;
use App\Entity\User;
use App\Repository\UserRepository;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Security\Core\Security;
// use Symfony\Component\Security\Csrf\CsrfToken;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\Security\Http\Util\TargetPathTrait;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
use Symfony\Component\Security\Csrf\CsrfTokenManagerInterface;
use Symfony\Component\Security\Core\User\UserProviderInterface;
use Symfony\Component\Security\Guard\PasswordAuthenticatedInterface;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
// use Symfony\Component\Security\Core\Exception\InvalidCsrfTokenException;
use Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface;
use Symfony\Component\Security\Guard\Authenticator\AbstractFormLoginAuthenticator;
// use Symfony\Component\Security\Core\Exception\CustomUserMessageAuthenticationException;
class AdminLoginFormAuthenticator extends AbstractFormLoginAuthenticator implements PasswordAuthenticatedInterface
{
use TargetPathTrait;
private $userRepository;
private $entityManager;
private $urlGenerator;
private $csrfTokenManager;
private $passwordEncoder;
public function __construct(UserRepository $userRepository, EntityManagerInterface $entityManager, UrlGeneratorInterface $urlGenerator, CsrfTokenManagerInterface $csrfTokenManager, UserPasswordEncoderInterface $passwordEncoder)
{
$this->entityManager = $entityManager;
$this->urlGenerator = $urlGenerator;
$this->csrfTokenManager = $csrfTokenManager;
$this->passwordEncoder = $passwordEncoder;
$this->userRepository = $userRepository;
}
public function supports(Request $request)
{
// die('Our authenticator is alive!');
return 'admin_account_login' === $request->attributes->get('_route')
&& $request->isMethod('POST');
}
public function getCredentials(Request $request)
{
// dd($request->request->all());
$credentials = [
'email' => $request->request->get('_username'),
'password' => $request->request->get('_password'),
'csrf_token' => $request->request->get('_csrf_token'),
];
// dd($credentials);
$request->getSession()->set(
Security::LAST_USERNAME,
$credentials['email']
);
return $credentials;
}
public function getUser($credentials, UserProviderInterface $userProvider)
{
// dd($credentials);
return $this->userRepository->findOneBy(['email' => $credentials['email']]);
// $token = new CsrfToken('authenticate', $credentials['csrf_token']);
// if (!$this->csrfTokenManager->isTokenValid($token)) {
// throw new InvalidCsrfTokenException();
// }
// $user = $this->entityManager->getRepository(User::class)->findOneBy(['email' => $credentials['email']]);
// if (!$user) {
// // fail authentication with a custom error
// throw new CustomUserMessageAuthenticationException('Email could not be found.');
// }
// return $user;
}
public function checkCredentials($credentials, UserInterface $user)
{
// dd($user);
// return true;
return $this->passwordEncoder->isPasswordValid($user, $credentials['password']);
}
/**
* Used to upgrade (rehash) the user's password automatically over time.
*/
public function getPassword($credentials): ?string
{
return $credentials['password'];
}
public function onAuthenticationSuccess(Request $request, TokenInterface $token, $providerKey)
{
// dd('success');
if ($targetPath = $this->getTargetPath($request->getSession(), $providerKey)) {
return new RedirectResponse($targetPath);
}
// For example : return new RedirectResponse($this->urlGenerator->generate('some_route'));
// throw new \Exception('TODO: provide a valid redirect inside '.__FILE__);
return new RedirectResponse($this->urlGenerator->generate('admin_ads_index'));
}
protected function getLoginUrl()
{
return $this->urlGenerator->generate('admin_account_login');
}
}
4/5 AdminAccountController.php 处理 admin/login 和 admin/logout 路由：
<?php
namespace App\Controller;
use App\Security\AdminFormAuthenticator;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Component\Security\Http\Authentication\AuthenticationUtils;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\IsGranted;
use Symfony\Component\HttpFoundation\Request;
class AdminAccountController extends AbstractController
{
/**
* Require ROLE_ADMIN for only this controller method.
* @IsGranted("IS_AUTHENTICATED_ANONYMOUSLY")
* @Route("/admin/login", name="admin_account_login")
*/
public function login(AuthenticationUtils $authenticationUtils)
{
// if ($this->getUser()) {
// return $this->redirectToRoute('target_path');
// }
// get the login error if there is one
$error = $authenticationUtils->getLastAuthenticationError();
// last username entered by the user
$lastUsername = $authenticationUtils->getLastUsername();
return $this->render('admin/account/login.html.twig', [
'hasError' => $error !== null,
'username' => $lastUsername
]);
}
/**
* Allows admin user to log out
* @Route("/admin/logout", name="admin_account_logout", methods={"GET"})
* @return void
*/
public function logout() {
throw new \Exception('Will be intercepted before getting here');
}
}
5/5 我的树枝标题模板的一部分托管了注销按钮：
<div class="dropdown-menu dropdown-menu-right" aria-labelledby="accountDropdownLink">
<a href="{{ path('app_admin_account_logout')}}" class="dropdown-item">Déconnexion</a>
</div>