My Symfony RegistrationFormType does not submit

  php, registration, symfony, symfony-forms, twig

I generated the user registration code with the symfony console make:registration command. But when I fill out the Registration form, and submit, var_dump($ form->isSubmitted()) always shows false, so I fail to actually create the users. What can explain this? How to correct?

This is the generated controller file:

#[Route('/register', name: 'app_register')]
public function register(Request $request, UserPasswordEncoderInterface $passwordEncoder): Response
    $user = new User();
    $form = $this->createForm(RegistrationFormType::class, $user);
    if ($form->isSubmitted() && $form->isValid()) {
        // encode the plain password

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

        // generate a signed url and email it to the user
        $this->emailVerifier->sendEmailConfirmation('app_verify_email', $user,
            (new TemplatedEmail())
                ->from(new Address('[email protected]', 'Bethesda Administration'))
                ->subject('Please Confirm your Email')
        // do anything else you need here, like send an email

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

    return $this->render('registration/register.html.twig', [
        'registrationForm' => $form->createView(),

This is the generated form type:

class RegistrationFormType extends AbstractType {
public function buildForm(FormBuilderInterface $builder, array $options)
        ->add('agreeTerms', CheckboxType::class, [
            'mapped' => false,
            'constraints' => [
                new IsTrue([
                    'message' => 'You should agree to our terms.',
        ->add('plainPassword', PasswordType::class, [
            // instead of being set onto the object directly,
            // this is read and encoded in the controller
            'mapped' => false,
            'attr' => ['autocomplete' => 'new-password'],
            'constraints' => [
                new NotBlank([
                    'message' => 'Please enter a password',
                new Length([
                    'min' => 6,
                    'minMessage' => 'Your password should be at least {{ limit }} characters',
                    // max length allowed by Symfony for security reasons
                    'max' => 4096,


This is the generated twig file:

{{ form_start(registrationForm) }}
    {{ form_row( }}
    {{ form_row(registrationForm.plainPassword, {
        label: 'Password'
    }) }}
    {{ form_row(registrationForm.agreeTerms) }}

    <button type="submit" class="btn">Register</button>
{{ form_end(registrationForm) }}

This file were generated by the symfony console make:registration command. Please where is the problem?

Source: Symfony Questions