Individuelle Validator Einschränkung in Symfony 3

Question

Ich versuche, eine benutzerdefinierte Validator Einschränkung in Symfony 3.

Ich habe, natürlich zu schaffen, folgte das doc Ende mit dieser endete:

#AppBundle\Validator\Constraint\Device.php 

namespace AppBundle\Validator\Constraint; 
/** 
* @Annotation 
*/ 
class Device extends \Symfony\Component\Validator\Constraint 
{ 
    public $message = 'Device "%device%" is not valid'; 
    public $shortMessage = 'Device ID is too short'; 
    public $chunkMessage = 'Device ID doesn\'t have a correct number of parts'; 
} 

Constraint

#AppBundle\Validator\DeviceValidator.php 
namespace AppBundle\Validator; 

use Symfony\Component\Validator\Constraint; 
use Symfony\Component\Validator\ConstraintValidator; 

class DeviceValidator extends ConstraintValidator 
{ 
public function validate($value, Constraint $constraint) : void 
{ 
    if (!$myconstraint) { 
     //A lot of code here 
     $this->context->buildViolation($constraint->shortMessage)->addViolation(); 
    } 
} 
} 

Und Formtype

#AppBundle\Form\Type\LoginType.php 

namespace AppBundle\Form\Type; 

use AppBundle\Validator\Constraint\Device; 
use Symfony\Component\Form\AbstractType; 
use Symfony\Component\Form\Extension\Core\Type\TextType; 
use Symfony\Component\Form\FormBuilderInterface; 
use Symfony\Component\OptionsResolver\OptionsResolver; 
use Symfony\Component\Validator\Constraints\Length; 

class LoginType extends AbstractType 
{ 
public function buildForm(FormBuilderInterface $builder, array $options) 
{ 
    $builder 
     ->add('username', TextType::class, ['required' => true, 'constraints' => [new Length(['min' => 3, 'minMessage' => 'Username is too short'])]]) 
     ->add('password', TextType::class, ['required' => true, 'constraints' => [new Length(['min' => 3, 'minMessage' => 'Password is too short'])]]) 
     ->add('device', TextType::class, ['required' => true, 'constraints' => [new Device()]]); 
} 
} 

Formular wird wie folgt erstellt:

$loginForm = Forms::createFormFactoryBuilder()->addExtension(new HttpFoundationExtension())->getFormFactory()->create(LoginType::class); 

Aber was auch immer ich tue, ich diese Antwort bekam:

{ "Code": 500, "message": "Die Option \" Constraints \" ist nicht vorhanden. Definierte Optionen sind: \ "action \", \ "attr \", \ "auto_initialize \", \ "block_name \", \ "by_reference \", \ "compound \", \ "data \", \ "data_class \" "," behinderte "," leere_Daten "," Fehlerbubbing "," inherit_data "," label "," label_attr "," label_format "," mapped ", \ "method \" \ "post_max_size_message \" \ "property_path \" \ "erforderlich \" \ "translation_domain \" \ "trim \" \ "upload_max_size_message \".“ }

nach doc, «Zwang» erlaubt ist, wo ich es und ich weiß wirklich nicht, warum Symfony hier weint.

Jede Idee? vielen Dank.

Answer 1

Ihr Namespace in AppBundle \ Validator \ Constraint \ Device.php ist nicht ganz richtig. Entfernen Sie die abschließende "Einschränkung":

namespace AppBundle\Validator; 

Answer 2

Ich denke, dass Sie ValidatorExtension vermissen.

use Symfony\Component\Validator\Validation; 
use Symfony\Component\Form\Extension\Validator\ValidatorExtension; 
$validator = Validation::createValidator(); 

$formFactory = Forms::createFormFactoryBuilder() 
    ->addExtension(new HttpFoundationExtension()) 
    ->addExtension(new ValidatorExtension($validator)) 
    ->getFormFactory() 
    ->create(LoginType::class);