TextType Field empty_data bug - Expected argument of type "string", "NULL" given. #29061
Description
The documentation for TextType form field says:
The default value is '' (the empty string).
https://symfony.com/doc/current/reference/forms/types/text.html#empty-data
But probably it isn't true because when we have entity:
namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* @ORM\Entity(repositoryClass="App\Repository\FooRepository")
*/
class Foo
{
/**
* @ORM\Id()
* @ORM\GeneratedValue()
* @ORM\Column(type="integer")
*/
private $id;
/**
* @ORM\Column(type="string", length=255)
*/
private $stringField = 'default value to overwrite';
public function getId(): ?int
{
return $this->id;
}
public function getStringField(): ?string
{
return $this->stringField;
}
public function setStringField(string $stringField): self
{
$this->stringField = $stringField;
return $this;
}
the form:
namespace App\Form;
use App\Entity\Foo;
use http\Env\Request;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class FooType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('stringField', null, ['required' => false])
;
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => Foo::class,
]);
}
}
and the controller like this:
namespace App\Controller;
use App\Form\FooType;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Annotation\Route;
class MainController extends AbstractController
{
/**
* @Route("/main", name="main")
*/
public function index(Request $request)
{
$form = $this->createForm(FooType::class);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
dump($form->getData()->getStringField());
}
return $this->render('main/index.html.twig', [
'controller_name' => 'MainController',
'form' => $form->createView(),
]);
}
}
Then is throw InvalidArgumentException by PropertyAccessor.php:
Expected argument of type "string", "NULL" given.
because $form->getData()->getStringField() is null instead empty string like default defined in documentation.