Symfony 5 Zmiana ROLES za pomocą ChoiceType w formularzu ? The form's view data is expected...

Question

Witam

Tworze aplikacje sklepu, dla super admina zrobiłem tabelkę z zarzadzaniem użytkowników, chciałbym zrobić w modalu jedno pole rozwijane do zmiany uprawnień danego użytkownika. Używam Security-Bundle i mam standardową tabelke dla User:

class User implements UserInterface
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\Column(type="string", length=180, unique=true)
     */
    private $email;

    /**
     * @ORM\Column(type="json")
     */
    private $roles = ['ROLE_USER'];

    /**
     * @var string The hashed password
     * @ORM\Column(type="string")
     */
    private $password;

    /**
     * @ORM\Column(type="boolean")
     */
    private $isVerified = false;

    /**
     * @ORM\Column(type="datetime")
     */
    private $registration_date;

    /**
     * @ORM\Column(type="datetime", nullable=true)
     */
    private $last_login;

 

FormType dla formularza:

<?php

namespace App\Form;

use App\Entity\User;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class UserManageType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
        ->add('roles', ChoiceType::class, [
            'required' => true,
            'multiple' => false,
            'expanded' => false,
            'choices'  => [
              'User' => 'ROLE_USER',
              'Admin' => 'ROLE_ADMIN',
              'Super Admin' => 'ROLE_SUPER_ADMIN',
            ],
        ])
        ->add('submit', SubmitType::class);
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => User::class
        ]);
    }
}

 

Cały czas mam błąd : The form's view data is expected to be a "App\Entity\User", but it is a "array". You can avoid this error by setting the "data_class" option to null or by adding a view transformer that transforms "array" to an instance of "App\Entity\User".

Rozumiem błąd ale kompletnie nie wiem jak to obejść, gdy zamieniam

'data_class' => User::class
na:
'data_class' => null

To mam taki blad: 

Object of class Symfony\Component\Form\FormView could not be converted to string