Symfony2: Getting the list of user roles in FormBuilder

Question

I\'m making a form for user creation, and I want to give one or several roles to a user when I create him.

How do I get the list of roles defined in security.y

Answer 1

In Symfony 3.3, you can create a RolesType.php as follows:

roles = array_unique($roles);
  }

  public function configureOptions(OptionsResolver $resolver) {
    $resolver->setDefaults(array(
        'choices' => $this->roles,
        'attr' => array(
            'class' => 'form-control',
            'aria-hidden' => 'true',
            'ref' => 'input',
            'multiple' => '',
            'tabindex' => '-1'
        ),
        'required' => true,
        'multiple' => true,
        'empty_data' => null,
        'label_attr' => array(
            'class' => 'control-label'
        )
    ));
  }

  public function getParent() {
    return ChoiceType::class;
  }

}

Then add it to the form as follows:

$builder->add('roles', RolesType::class,array(
          'label' => 'Roles'
      ));

Important is that each role must also be contained, for example: ROLE_ADMIN: [ROLE_ADMIN, ROLE_USER]