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嘿伙计们，我试图在我相同模型的对象之间建立关系。

我有一张桌子Qcm，一张桌子Equivalent，最后一张桌子是EquivalentRelation。这个想法是有一个可以与许多其他 QCM 相关的 QCM。

我的Equivalent模型的设置方式有一个变量，该变量$qcmId是 qcm 的 id (int) 和我的Equivalent模型的主键。

/**
 * @ORM\Entity(repositoryClass=EquivalentRepository::class)
 */
class Equivalent
{

    /**
     * @ORM\Id()
     * @ORM\Column(type="integer")
     */
    public $qcmId;

    /**
     * @ORM\ManyToOne(targetEntity=EquivalentRelation::class, inversedBy="equivalent")
     */
    private $equivalentRelation;

    /**
     * @return mixed
     */
    public function getQcmId()
    {
        return $this->qcmId;
    }

    /**
     * @param mixed $qcmId
     */
    public function setQcmId($qcmId): void
    {
        $this->qcmId = $qcmId;
    }

    public function getEquivalentRelation(): ?EquivalentRelation
    {
        return $this->equivalentRelation;
    }

    public function setEquivalentRelation(?EquivalentRelation $equivalentRelation): self
    {
        $this->equivalentRelation = $equivalentRelation;

        return $this;
    }
}

我的EquivalentRelation模型设置为$equivalent与我的Equivalent模型相关，并且$relateId与所选的 QCM 相关联。

/**
 * @ORM\Entity(repositoryClass=EquivalentRelationRepository::class)
 */
class EquivalentRelation
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\OneToMany(targetEntity=Equivalent::class, mappedBy="equivalentRelation")
     */
    private $equivalent;

    /**
     * @ORM\ManyToMany(targetEntity=Qcm::class, inversedBy="equivalentRelations")
     */
    private $relatedId;

    public function __construct()
    {
        $this->equivalent = new ArrayCollection();
        $this->relatedId = new ArrayCollection();
    }

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

    /**
     * @return Collection|Equivalent[]
     */
    public function getEquivalent(): Collection
    {
        return $this->equivalent;
    }

    public function addEquivalent(Equivalent $equivalent): self
    {
        if (!$this->equivalent->contains($equivalent)) {
            $this->equivalent[] = $equivalent;
            $equivalent->setEquivalentRelation($this);
        }

        return $this;
    }

    public function removeEquivalent(Equivalent $equivalent): self
    {
        if ($this->equivalent->removeElement($equivalent)) {
            // set the owning side to null (unless already changed)
            if ($equivalent->getEquivalentRelation() === $this) {
                $equivalent->setEquivalentRelation(null);
            }
        }

        return $this;
    }

    /**
     * @return Collection|Qcm[]
     */
    public function getRelatedId(): Collection
    {
        return $this->relatedId;
    }

    public function addRelatedId(Qcm $relatedId): self
    {
        if (!$this->relatedId->contains($relatedId)) {
            $this->relatedId[] = $relatedId;
        }

        return $this;
    }

    public function removeRelatedId(Qcm $relatedId): self
    {
        $this->relatedId->removeElement($relatedId);

        return $this;
    }
}

下一步是制作一个EquivalentType表格，该表格将采用所选的 QCM（可以是多个）并轻松验证我的模型。到目前为止，这部分似乎没有问题。

class EquivalentType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('relatedId', EntityType::class, [
            'class' => Qcm::class,
            'choice_label' => 'id',
            'multiple' => true,
            'label' => 'QCM Ref Master',
        ]);
    }

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

发送我的表格后一切正常，

通过以下方式处理请求 QcmController：

由于我有两个相关的不同模型，我首先创建一个新的Equivalent.

$equivalent = new Equivalent();
$equivalent->setQcmId($qcm->getId());

其次是 EquivalentRelation 的相同内容

$equivalentrelation = new EquivalentRelation();
$equivalentrelation->addEquivalent($equivalent);

当尝试访问EquivalentRelation与查询参数等效的以显示与其相关的所有 QCM ( relatedId) 对象时。

$tester = $equivalentRepository->findBy(['qcmId' => $qcm->getId()]);
$data =  $equivalentRelationRepository->findBy(['equivalent' => $tester]);

这是它的控制器端：

      $equivalent = new Equivalent();
       $equivalent->setQcmId($qcm->getId());
       $equivalentrelation = new EquivalentRelation();
       $equivalentrelation->addEquivalent($equivalent);
        $equival = $this->createForm(EquivalentType::class, $equivalentrelation);
        $equival->handleRequest($request);
if ($equival->isSubmitted() && $equival->isValid()){
            $entityManager->persist($equivalent);
            $entityManager->persist($equivalentrelation);
            $entityManager->flush();
           return $this->redirectToRoute('qcm_show', ['id' => $qcm->getId()]);
        }

我收到此错误消息：

You cannot search for the association field 'App\Entity\EquivalentRelation#equivalent', because it is the inverse side of an association. Find methods only work on owning side associations.

我尝试了所有方法，我不知道我的设计或映射系统是否有问题。

4

1 回答 1

0

您不需要运行该查询，因为您已经拥有Equivalent $tester要检查的实体。只需使用它的 getter 方法：

$tester = $equivalentRepository->findBy(['qcmId' => $qcm->getId()]);
//$data =  $equivalentRelationRepository->findBy(['equivalent' => $tester]);
$data =  $tester->getEquivalentRelation();
于 2021-03-15T16:49:21.817 回答