使用 Symfony 3 在同一页面上呈现多个表单

Question

我想在同一页面上显示登录信息和注册表单。但是，我们似乎无法在控制器中的不同两个动作中呈现具有不同表单变量的相同模板。

这就是我的意思；

class SecurityController extends Controller { 
/**
 * @Route("/", name="login")
 */
public function loginAction(Request $request)
{

    //Check if the user is already authenticated
    if($this->container->get('security.authorization_checker')->isGranted('IS_AUTHENTICATED_FULLY')) {
        return $this->redirect($this->generateUrl('dashboard'));
    }

   $authenticationUtils = $this->get('security.authentication_utils');

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

    // last username entered by the user
    $lastUsername = $authenticationUtils->getLastUsername();

    $this->addFlash(
        'welcome',
        'Welcome back!'
    );

    return $this->render(
        '::landing.html.twig',
        array(
            // last username entered by the user
            'last_username' => $lastUsername,
            'error'         => $error,
        )
    );

    $registrationform = $this->get('form.factory')->createNamedBuilder('registrationform', UserType::class);
}

/**
 * @Route("/register", name="register")
 */
public function registerAction(Request $request)
{
    //Check authentication
    if($this->container->get('security.authorization_checker')->isGranted('IS_AUTHENTICATED_FULLY')) {
        return $this->redirect($this->generateUrl('dashboard'));
    }
    // get the authentication utils
    $authenticationUtils = $this->get('security.authentication_utils');
    // get the login error if there is one
    $error = $authenticationUtils->getLastAuthenticationError();
    // last username entered by the user
    $lastUsername = $authenticationUtils->getLastUsername();
    // build the form
    $user = new User();
    $form = $this->createForm(UserType::class, $user);
        // handle the submit (will only happen on POST)
        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {
            $user->setRoles(array('ROLE_USER'));
            // Encode the password (you could also do this via Doctrine listener)
            $password = $this->get('security.password_encoder')
                ->encodePassword($user, $user->getPlainPassword());
            $user->setPassword($password);

            // save the User!
            $em = $this->getDoctrine()->getManager();
            $em->persist($user);
            $em->flush();

            $token = new UsernamePasswordToken($user, null, 'main', $user->getRoles());
            $this->get('security.token_storage')->setToken($token);
            $this->get('session')->set('_security_main', serialize($token));
            // ... do any other work - like sending them an email, etc
            // maybe set a "flash" success message for the user

            $this->addFlash(
                'success',
                'Please complete your profile now.'
            );

            $message = \Swift_Message::newInstance()
                ->setSubject('You have successfully signed up!')
                ->setFrom('no-reply@kampweb.com')
                ->setTo($user->getUsername())
                ->setBody($this->renderView(
                    ':emails:registration.html.twig'),'text/html');
            $this->get('mailer')->send($message);

            return $this->redirectToRoute('update');
        } else{
            $errors = $this->get('validator')->validate( $user );
        }

    return $this->render(
        '::landing.html.twig',
        array( 'form' => $form->createView(),
            'last_username' => $lastUsername,
            'error' => $error,
            )
    );
}

}

上面我有我的登录和注册操作。我想将“表单”变量传递给我使用登录操作呈现的同一个树枝模板。当我尝试这样做时，我得到了以下异常。

Variable "form" does not exist in ::landing.html.twig at line 50
500 Internal Server Error - Twig_Error_Runtime

Answer 1

我会这样做

2 个树枝文件 -

login.html.twig 和 register.html.twig - 每个文件都自己渲染动作

现在是名为 baseLogin.html.twig 的第三个 twig 文件

在这个文件中，我通过调用控制器来渲染两个文件（登录和注册）

例如

baseLogin.html.twig

<div>
    {{ render(controller('UserBundle:Security:login')) }}
</div>

<div>
    {{ render(controller('UserBundle:Registration:register')) }}
</div>