Symfony-形式-多对多关系-集合类型 [英] Symfony - form - many to many relation - collection type

问题描述

这里是情况:

我有一个实体Property

I have an entity Property

class Property
{
    /**
     * @ORM\Id
     * @ORM\Column(type="string")
     * @ORM\GeneratedValue(strategy="UUID")
     */
    protected $id;

    /**
     * @ORM\ManyToMany(targetEntity="PropertyEquipment", inversedBy="properties")
     */
    protected $propertyEquipments;

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

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

    public function addPropertyEquipment(\AppBundle\Entity\PropertyEquipment $propertyEquipment)
    {
        $this->propertyEquipments[] = $propertyEquipment;

        return $this;
    }

    public function removePropertyEquipment(\AppBundle\Entity\PropertyEquipment $propertyEquipment)
    {
        $this->propertyEquipments->removeElement($propertyEquipment);
    }

    public function getPropertyEquipments()
    {
        return $this->propertyEquipments;
    }
}

以及实体PropertyEquipment:

And the entity PropertyEquipment:

class PropertyEquipment
{

    /**
     * @ORM\Id
     * @ORM\Column(type="string")
     * @ORM\GeneratedValue(strategy="UUID")
     */
    protected $id;

    /**
     * @ORM\ManyToMany(targetEntity="Property", mappedBy="propertyEquipments")
     */
    protected $properties;

    /**
     * @ORM\Column(type="string", length=100)
     * @Gedmo\Translatable
     */
    protected $equipmentName;


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

    /**
     * Get id
     *
     * @return string
     */
    public function getId()
    {
        return $this->id;
    }

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

    /**
     * @param mixed $equipmentName
     */
    public function setEquipmentName($equipmentName)
    {
        $this->equipmentName = $equipmentName;
    }

    public function addProperty(Property $property)
    {
        $this->properties[] = $property;

        return $this;
    }

    public function removeProperty(Property $property)
    {
        $this->properties->removeElement($property);
    }

    public function getProperties()
    {
        return $this->properties;
    }
}

PropertyCreation表单

The form PropertyCreation

class PropertyCreation extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            //with this I see the values coming from DB in the template
            ->add("propertyEquipments", PropertyEquipmentCreation::class)

            //with this it's empty :/
            /*->add("propertyEquipments", CollectionType::class, array(
                "entry_type" => PropertyEquipmentCreation::class,
            ))*/
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => Property::class
        ));
    }
}

以下是PropertyEquipmentCreation的形式:

Here is the form PropertyEquipmentCreation:

class PropertyEquipmentCreation extends AbstractType
{
    /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder      
            ->add('propertyEquipment', EntityType::class, [
                'class' => 'AppBundle\Entity\PropertyEquipment',
                'choice_label' => 'equipmentName',
                'expanded' => true,
                'multiple' => true
            ]);
    }

    /**
     * @param OptionsResolver $resolver
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => PropertyEquipment::class,
        ]);
    }
}

还有控制器

public function createPropertyAction(Request $request)
{
    $property = new Property();

    $form = $this->createForm(PropertyCreation::class, $property);
    $form->handleRequest($request);

    if ($form->isSubmitted() && $form->isValid()) {
        $entityManager = $this->getDoctrine()->getManager();
        $entityManager->persist($property);
        $entityManager->flush();

        return $this->redirectToRoute('homepage');
    }
    return $this->render('form/owner_create_property.html.twig', ["form" => $form->createView()]);
}

我的错误:

Expected value of type "Doctrine\Common\Collections\Collection|array" for association field "AppBundle\Entity\Property#$propertyEquipments", got "Doctrine\Common\Collections\ArrayCollection" instead.

我必须用class PropertyEquipmentTransformer implements DataTransformerInterface之类的东西来转换它们吗?

Must I transform these with something like class PropertyEquipmentTransformer implements DataTransformerInterface?

推荐答案

我认为您应该在PropertyEquipmentCreation中使用getParent()函数并从EntityType::class继承，然后将所有字段配置放入configureOptions()函数中(删除buildForm函数)，它应该可以工作.

I think you should use getParent() function in PropertyEquipmentCreation and inherit from EntityType::class then put all your field configs in the configureOptions() function (remove the buildForm function) and it should work.

您遇到了这个问题，因为它在您的实现中是一个compound form，并且没有simple form并且symfony无法解决需要将子窗体内部创建的哪个字段用作实体字段的来源

You are having this problem because it is a compound form in your implementation and no simple form and symfony is unable to resolve which field created inside the subform needs to be used as source for the entity field

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