php - 在链配置的命名空间 App\Entity 中找不到类 'App\Form\Database_InteractionType'

Question

您好，当我尝试从数据库中删除某些内容时，我找不到错误。

它说我的命名空间是错误的，但我真的找不到任何问题。

这是我正在调用的操作

   /**
     * @Route("/delete/{id}", name="delete")
     * @param $id
     * @return \Symfony\Component\HttpFoundation\RedirectResponse
     */
    public function deleteById($id)
    {
        $em = $this->getDoctrine()->getManager();

        $entries = $em->getRepository(Database_InteractionType::class)->find($id);

        $em->remove($entries);
        $em->flush();

        return $this->redirectToRoute('show');
    }

这是实体和我的表格。
我已经连续看了 2 个小时，似乎找不到 Iusse ..

实体:

<?php

namespace App\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity(repositoryClass="App\Repository\Database_InteractionRepository")
 */
class Database_Interaction
{
    /**
     * @ORM\Id()
     * @ORM\GeneratedValue()
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\Column(type="string", length=255)
     */
    private $question;

    /**
     * @ORM\Column(type="string", length=255)
     */
    private $answer;

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getQuestion(): ?string
    {
        return $this->question;
    }

    public function setQuestion(string $question): self
    {
        $this->question = $question;

        return $this;
    }

    public function getAnswer(): ?string
    {
        return $this->answer;
    }

    public function setAnswer(string $answer): self
    {
        $this->answer = $answer;

        return $this;
    }
}

我的表格:

<?php

namespace App\Form;

use App\Entity\Database_Interaction;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class Database_InteractionType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add(
                'question',
                TextType::class,
                [
                    'attr' => [
                        'placeholder' => 'Enter your Question',
                        'class' => 'form-control'
                    ],
                    'required' => true
                ]
            )
            ->add(
                'answer',
                TextType::class,
                [
                    'required' => true,
                    'attr' => [
                        'class' => 'form-control',
                        'placeholder' => 'Enter your Answer',
                    ]
                ]
            )
            ->add(
                'save',
                SubmitType::class,
                [
                    'attr' => [
                        'class' => 'btn btn-primary'
                    ]
                ]
            )
        ;
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => Database_Interaction::class,
        ]);
    }
}

和我的存储库，如果这对任何帮助..

<?php

namespace App\Repository;

use App\Entity\Database_Interaction;
use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
use Symfony\Bridge\Doctrine\RegistryInterface;

/**
 * @method Database_Interaction|null find($id, $lockMode = null, $lockVersion = null)
 * @method Database_Interaction|null findOneBy(array $criteria, array $orderBy = null)
 * @method Database_Interaction[]    findAll()
 * @method Database_Interaction[]    findBy(array $criteria, array $orderBy = null, $limit = null, $offset = null)
 */
class Database_InteractionRepository extends ServiceEntityRepository
{
    public function __construct(RegistryInterface $registry)
    {
        parent::__construct($registry, Database_Interaction::class);
    }

    /**
     * @param string $id
     * @return Database_Interaction|null
     */
    public function findById(string $id)
    {
        return $this->findOneBy(
            ['id' => $id]
        );
    }

    // /**
    //  * @return SubmitNew[] Returns an array of SubmitNew objects
    //  */
    /*
    public function findByExampleField($value)
    {
        return $this->createQueryBuilder('s')
            ->andWhere('s.exampleField = :val')
            ->setParameter('val', $value)
            ->orderBy('s.id', 'ASC')
            ->setMaxResults(10)
            ->getQuery()
            ->getResult()
        ;
    }
    */

    /*
    public function findOneBySomeField($value): ?SubmitNew
    {
        return $this->createQueryBuilder('s')
            ->andWhere('s.exampleField = :val')
            ->setParameter('val', $value)
            ->getQuery()
            ->getOneOrNullResult()
        ;
    }
    */
}

如果有人可以帮助我，我不知道该去哪里找了...

谢谢

Answer 1

仔细看看这一行:

$entries = $em->getRepository(Database_InteractionType::class)->find($id);

这是指表单类型类( App\Form\Database_InteractionType )而不是您的持久化实体类，它位于 App\Entity命名空间(它正在查找的命名空间)，这就是产生错误的原因。表单没有存储库，相关实体有。
试试这个:

$entries = $em->getRepository(Database_Interaction::class)->find($id);