For choosing between a html select or checkboxes on your form, just toggle the “multiple” parameter on the ChoiceType class. Since the roles are an array, we need a data transformer.
Example:
<?php
namespace App\Form;
use App\Entity\User;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Symfony\Component\Form\CallbackTransformer;
class UserType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('email')
->add('Roles', ChoiceType::class, [
'required' => true,
'multiple' => false,
'expanded' => false,
'choices' => [
'User' => 'ROLE_USER',
'Partner' => 'ROLE_PARTNER',
'Admin' => 'ROLE_ADMIN',
],
])
->add('password')
->add('groups')
;
// Data transformer
$builder->get('Roles')
->addModelTransformer(new CallbackTransformer(
function ($rolesArray) {
// transform the array to a string
return count($rolesArray)? $rolesArray[0]: null;
},
function ($rolesString) {
// transform the string back to an array
return [$rolesString];
}
));
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => User::class,
]);
}
}
