How to set min value for field in form? - symfony

Question

I have form with integer field - price.
$builder->add('list',
CollectionType::class,
[
'required' => false,
'allow_add' => true,
'error_bubbling' => true,
])
->add('price',
IntegerType::class,
[
'required' => false,
'error_bubbling' => true,
]);
How to set, for example, for validation i need min value for price 0 or greater?
I tried this one, but it's not work:
'constraints' => [
new GreaterThanOrEqual(50)
],
Thanks for all help.
controller Action
public function getProductAction(Request $request)
{
$variables = $request->get('list');
$price = $request->get('price');
$form = $this->createForm(ProductForm::class, null, ['csrf_protection' => false, 'allow_extra_fields' => true]);
$form->submit(['variables' => $variables, 'prices' => $price]);
if(!$form->isValid()) {
$errors = '';
foreach ($form->getErrors() as $error) {
$errors = $error->getMessage();
}
return new JsonResponse([
'errors' => $errors
],Response::HTTP_BAD_REQUEST);
} else {
$product = $this->getDoctrine()
->getRepository(Product::class)
->findByListAndPrice($list, $price);
if (!$product) {
return new JsonResponse([
'errors' => 'Product not found.'
],Response::HTTP_BAD_REQUEST);
}
return new JsonResponse($product);
}
}
Form not validate, and don't show errors, $form->isValid() === true

Answer 1

According to https://github.com/symfony/symfony/issues/3533 you can use min and max for the IntegerType even though the documentation might not mention this.
$builder->add('list',
CollectionType::class,
[
'required' => false,
'allow_add' => true,
'error_bubbling' => true,
])
->add('price',
IntegerType::class,
[
'required' => false,
'error_bubbling' => true,
/*'min' => 50*/
'attr' => [
'min' => 50
]
]);
EDIT: According to the documentation the 'min' property has to be inside 'attr' tag. This will add the min inside the input in the HTML.

Answer 2

You can use RangeType instead of IntegerType.
use Symfony\Component\Form\Extension\Core\Type\RangeType;
// ...
$builder->add('list',
CollectionType::class,
[
'required' => false,
'allow_add' => true,
'error_bubbling' => true,
])
->add('price',
RangeType::class,
[
'required' => false,
'error_bubbling' => true,
'min' => 0,
'max' => 50
]);