Question

我正在尝试扩展一个包的形式，我收到了这个错误：

无法加载类型 “App \ Form \ Extension \ UserRegistrationFormExtension”：类没有实现“Symfony \ Component \ Form \ FormTypeInterface”。

SRC /形式/扩展/ UserRegistrationFormExtension.php

namespace App\Form\Extension;

use App\Entity\User;
use MyBundle\AuthenticationBundle\Form\UserRegistrationForm;
use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\Extension\Core\Type\CheckboxType;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Symfony\Component\Form\Extension\Core\Type\HiddenType;
use Symfony\Component\Form\Extension\Core\Type\PasswordType;
use Symfony\Component\Form\Extension\Core\Type\RepeatedType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Validator\Constraints\NotBlank;

class UserRegistrationFormExtension extends AbstractTypeExtension
{
    /**
     * Returns the name of the type being extended.
     *
     * @return string The name of the type being extended
     */
    public function getExtendedType()
    {
        return UserRegistrationForm::class;

    }

   /**
    * @param FormBuilderInterface $builder
    * @param array $options
    */
   public function buildForm(FormBuilderInterface $builder, array $options)
   {
      //code
   }

   /**
    * @param OptionsResolver $resolver
    */
   public function configureOptions(OptionsResolver $resolver)
   {
       $resolver->setDefaults([
           'data_class' => User::class,
           'validation_groups' => ['Default', 'Registration'],
           'allow_extra_fields' => true,
           'cascade_validation' => true,
       ]);
   }

}

配置/ services.yaml

App\Form\Extension\UserRegistrationFormExtension:
    tags:
        - { name: form.type_extension, extended_type: MyBundle\AuthenticationBundle\Form\UserRegistrationForm }

这是堆栈跟踪：

Symfony\Component\Form\Exception\InvalidArgumentException:
Could not load type "App\Form\Extension\UserRegistrationFormExtension": class does not implement "Symfony\Component\Form\FormTypeInterface".

  at vendor/symfony/form/FormRegistry.php:89
  at Symfony\Component\Form\FormRegistry->getType('App\\Form\\Extension\\UserRegistrationFormExtension')
     (vendor/symfony/form/FormFactory.php:58)
  at Symfony\Component\Form\FormFactory->createBuilder('App\\Form\\Extension\\UserRegistrationFormExtension', object(User), array())
     (vendor/symfony/form/FormFactory.php:30)
  at Symfony\Component\Form\FormFactory->create('App\\Form\\Extension\\UserRegistrationFormExtension', object(User), array())
     (vendor/symfony/framework-bundle/Controller/ControllerTrait.php:311)
  at Symfony\Bundle\FrameworkBundle\Controller\Controller->createForm('App\\Form\\Extension\\UserRegistrationFormExtension', object(User))
     (vendor/mybundle/auth/Controller/LoginStepsController.php:149)
  at MyBundle\AuthenticationBundle\Controller\LoginStepsController->register(object(Request), object(GuardAuthenticatorHandler), object(LoginFormAuthenticator), 'user@user.com')
     (vendor/symfony/http-kernel/HttpKernel.php:149)
  at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), 1)
     (vendor/symfony/http-kernel/HttpKernel.php:66)
  at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), 1, true)
     (vendor/symfony/http-kernel/Kernel.php:188)
  at Symfony\Component\HttpKernel\Kernel->handle(object(Request))
     (public/index.php:37)

我已经按照这个文档（https://symfony.com/doc/current/form/create_form_type_extension.html）了，但显然我做错了什么，我无法弄清楚是什么。

从包中扩展表单返回'类不实现“Symfony \ Component \ Form \ FormTypeInterface”

0 个答案: