Odtnhj

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)