Cfrgtkky

I made registration form according to this document

How to Implement a Simple Registration Form

It works well but, in case of error, it doesn't return anything and just reload.

For example.

+Use already existed username.

+Password double check is not correct.

I want to show message in these cases.

How can I catch the error message ???

BTW,as for login

I can catch the error like this in Security Controller

class SecurityController extends AbstractController

{

    /**

     * @Route("/login", name="app_login")

     */

    public function login(AuthenticationUtils $authenticationUtils): Response

    {



        // get the login error here

        $this->data['error'] = $authenticationUtils->getLastAuthenticationError();

then I want to catch the error as well in Registration Controller

<?php



namespace AppController;



use AppFormUserType;

use AppEntityUser;

use SymfonyBundleFrameworkBundleControllerAbstractController;

use SymfonyComponentHttpFoundationRequest;

use SymfonyComponentRoutingAnnotationRoute;

use SymfonyComponentSecurityCoreEncoderUserPasswordEncoderInterface;

use AppServiceCommonFunc;



class RegistrationController extends AbstractController

{

    /**

     * @Route("/register", name="user_registration")

     */

    public function register(Request $request, UserPasswordEncoderInterface $passwordEncoder,CommonFunc $commonFunc)

    {



        $this->data['user'] = $this->getUser();

        // 1) build the form

        $user = new User();

        $form = $this->createForm(UserType::class, $user);

        $this->data['error'] = $authenticationUtils->getLastAuthenticationError();

        // 2) handle the submit (will only happen on POST)

        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {



            // 3) Encode the password (you could also do this via Doctrine listener)

            $password = $passwordEncoder->encodePassword($user, $user->getPlainPassword());

            $user->setPassword($password);



            // 4) save the User!

            $entityManager = $this->getDoctrine()->getManager();

            $entityManager->persist($user);

            $entityManager->flush();



            // ... do any other work - like sending them an email, etc

            // maybe set a "flash" success message for the user



            return $this->redirectToRoute('index');

        }else if ($form->isSubmitted()) {  

           print $form->getErrors();exit; //nothing returns here.

        } 





        $this->data = array_merge($this->data,$commonFunc->makeMenuBar());

        $this->data['noLoginForm'] = true;

        return $this->render(

            'registration/register.html.twig',

            array('form' => $form->createView(),'data' => $this->data)

        );

    }

}

try replace form_row with form_widget or add form_error in twig template

for more see Twig Template Form Function and Variable Reference (Symfony Docs)

{# templates/registration/register.html.twig #}



{{ form_start(form) }}

    {{ form_widget(form.username) }}

    {{ form_widget(form.email) }}

    {{ form_widget(form.plainPassword.first) }}

    {{ form_widget(form.plainPassword.second) }}



    <button type="submit">Register!</button>

{{ form_end(form) }}