选项"约束"不存在

Question

我正在使用Symfony 2.6.我试图创建一个没有实体的表单,但得到以下错误:

选项"约束"不存在.已知选项包括:"action","attr","auto_initialize","block_name","by_reference","compound","csrf_field_name","csrf_message","csrf_protection","csrf_provider","csrf_token_id","csrf_token_manager" ",""data","data_class","disabled","empty_data","error_bubbling","inherit_data","intent","label","label_attr","label_format","mapped","max_length", "method","pattern","post_max_size_message","property_path","read_only","required","translation_domain","trim","virtual".

    class MessageType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('sender', 'text', [
                'constraints' => [
                    new Constraints\NotBlank(),
                ],
            ])
            ->add('recipient', 'email')
            ->add('message', 'textarea');
    }

    public function getName()
    {
        return 'message';
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $collectionConstraint = new Constraints\Collection(array(
            'fields' => [
                'sender' => [
                    new Constraints\NotBlank(),
                    new Constraints\Email(),
                ],
                'recipient' => [
                    new Constraints\NotBlank(),
                    new Constraints\Email(),
                ],
                'message' => [
                    new Constraints\NotBlank(),
                ],
            ],

        ));

        $resolver->setDefaults([
            'validation_constraints' => $collectionConstraint,
        ]);
    }
}

仅使用setDefaultOptions不会显示错误,但它不起作用,不会验证字段.

可以看出,无论如何都试过了.我也尝试使用组件表单发件箱的文档,但得到相同的错误.

http://symfony.com/doc/current/components/form/introduction.html#form-validation

编辑

我也试过这种方式并得到同样的错误.

    $form = $formFactory->createBuilder()
    ->add('task', 'text', array(
        'constraints' => new NotBlank(),
    ))
    ->add('dueDate', 'date', array(
        'constraints' => array(
            new NotBlank(),
            new Type('\DateTime'),
        )
    ))
    ->getForm();

Answer 1

“约束”选项是验证器扩展表单的一部分。我是如何解决这个问题的：

$ValidatorExtension = new ValidatorExtension($validatorBuilder->getValidator());

$formRegistry = new FormRegistry([$csrfProvider, new CoreExtension(), $ValidatorExtension], Yii::$symfony->container->get('form.resolved_type_factory'));