我正在处理网站的登录页面。当我单击登录按钮时没有任何反应,但是当我 $form->isValid() 从代码中删除时它工作正常。经过几次测试,我发现 $form->isValid() 总是返回 false!我不明白为什么总是这样false!这是控制器的代码:/** * @Route("/login", name="login", methods={"GET","POST"}) */public function login(Request $request): Response{ $user = new Admins(); $form = $this->createFormBuilder($user) ->add('username', TextType::class) ->add('password', PasswordType::class) ->getForm(); $form->handleRequest($request); if ($form->isSubmitted() && $form->isValid()) { $session =$request->getSession(); $session->clear(); $username =$user->getUsername(); $password =$user->getPassword(); $repository = $this->getDoctrine()->getRepository(Admins::class); $user1=$repository->findOneBy(array('username'=>$username,'password'=>$password)); if (!$user1) { $this->get('session')->getFlashBag()->add('info','The username or password is incorrect');} else { if (!$session->has('name')) { $session->set('username',$user1->getUsername()); $session->set('rank',$user1->getRank()); return $this->redirectToRoute('homepage'); } } } return $this->render('login/index.html.twig', [ 'user' => $user, 'form' => $form->createView(), ]);}这是查看页面的代码:<div class="text-center w-full p-t-25 p-b-50"> {% if app.session.flashBag.has('info') %} <div class="btn btn-warning"> {% for msg in app.session.flashBag.get('info') %} {{msg}} {% endfor %} </div> {% endif %}</div><form id="accesspanel" action=" {{ path ('login') }} " method="post"> <h1 id="litheader">Login Panel </h1>
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