IsNullConstraintValidator.php in Drupal 8
File
core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/IsNullConstraintValidator.php
View source
<?php
namespace Drupal\Core\Validation\Plugin\Validation\Constraint;
use Drupal\Core\TypedData\ComplexDataInterface;
use Drupal\Core\TypedData\ListInterface;
use Drupal\Core\TypedData\Validation\TypedDataAwareValidatorTrait;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Constraints\IsNullValidator;
class IsNullConstraintValidator extends IsNullValidator {
use TypedDataAwareValidatorTrait;
public function validate($value, Constraint $constraint) {
$typed_data = $this
->getTypedData();
if (($typed_data instanceof ListInterface || $typed_data instanceof ComplexDataInterface) && $typed_data
->isEmpty()) {
$value = NULL;
}
parent::validate($value, $constraint);
}
}