VichUploaderBundle & OneToOne关系

Question

更新:我解决了我的问题><，可能当我完成重构时，我在我的方法getFile上留下了一个“：字符串”.

今天我尝试在我的项目中添加VichUploderBundle，但是我遇到了一些麻烦。我遵循了文档，但我不喜欢让一个属性可上传的方法(在同一个模型上添加3个属性就是为了这个目的，不好意思，但不太好)，所以我开始创建一个只用于图像的实体，包含所有必要的属性，我还创建了一个新的FormType，并将其链接到我的父实体。但是现在，当我试图发布我的表单时，我得到了以下错误：

Return value of Vich\UploaderBundle\Mapping\PropertyMapping::getFile() must be an instance of Symfony\Component\HttpFoundation\File\File or null, string returned
(in vendor/vich/uploader-bundle/Mapping/PropertyMapping.php (line 80) )

我试图添加一些转储来检查变量和她是否存在，但出于一个奇怪的原因，Vich将其检测为null。

图像实体

<?php

namespace App\Entity;

use App\Entity\Traits\CreatedAtTrait;
use App\Entity\Traits\CreatedByTrait;
use Doctrine\ORM\Mapping as ORM;
use Exception;
use Symfony\Component\HttpFoundation\File\File;
use Vich\UploaderBundle\Mapping\Annotation as Vich;

/**
 * @ORM\Entity(repositoryClass="App\Repository\ImageRepository")
 * @Vich\Uploadable
 */
class Image
{
    use CreatedAtTrait;
    use CreatedByTrait;

    /**
     * @ORM\Id()
     * @ORM\GeneratedValue()
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @Vich\UploadableField(mapping="compose_logo", fileNameProperty="name", size="size")
     * @var File
     */
    private $file;

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

    /**
     * @ORM\Column(type="integer")
     */
    private $size;

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

    public function getFile(): ?string
    {
        return $this->file;
    }

    /**
     * If manually uploading a file (i.e. not using Symfony Form) ensure an instance
     * of 'UploadedFile' is injected into this setter to trigger the update. If this
     * bundle's configuration parameter 'inject_on_load' is set to 'true' this setter
     * must be able to accept an instance of 'File' as the bundle will inject one here
     * during Doctrine hydration.
     *
     * @param File|null $file
     * @return Image
     * @throws Exception
     */
    public function setFile(?File $file = null): self
    {
        $this->file = $file;

        return $this;
    }

    public function getName(): ?string
    {
        return $this->name;
    }

    public function setName(string $name): self
    {
        $this->name = $name;

        return $this;
    }

    public function getSize(): ?int
    {
        return $this->size;
    }

    public function setSize(int $size): self
    {
        $this->size = $size;

        return $this;
    }
}

ImageType

<?php

namespace App\Form;

use App\Entity\Image;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Vich\UploaderBundle\Form\Type\VichImageType;

class ImageType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('file', VichImageType::class, [
                'required' => false,
            ])
        ;
    }

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

父实体

<?php

namespace App\Entity;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;

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

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

    /**
     * @ORM\OneToOne(targetEntity="App\Entity\Image", cascade={"persist", "remove"})
     */
    private $logo;

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

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

    public function getName(): ?string
    {
        return $this->name;
    }

    public function setName(string $name): self
    {
        $this->name = $name;

        return $this;
    }


    public function getLogo(): ?Image
    {
        return $this->logo;
    }

    public function setLogo(?Image $logo): self
    {
        $this->logo = $logo;

        return $this;
    }
}

ParentType

<?php

namespace App\Form;

use App\Entity\Parent;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\CollectionType;
use Symfony\Component\Form\Extension\Core\Type\TextareaType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class ParentType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('logo', ImageType::class)
            ->add('name', TextType::class)
        ;
    }

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

在测试中，我还尝试删除vendor/vich/uploader-bundle/Mapping/PropertyMapping.php中的注释以接受所有变量类型，并且当Doctrine试图将实体保存在数据库中时，中的所有属性除我的createdAt特征外都为空(但这可能是正常的，因为在此之前我有异常.)

另外，当我在vendor/vich/uploader-bundle/Mapping/PropertyMapping.php：https://imgur.com/NCEft1s中的第80行转储变量时，还有一个屏幕截图。

Answer 1

您需要在您的类中将您的“徽标”属性定义为EntityType，而不是ImageType！所以更改这一行->add('logo', ImageType::class)

在symfony文档中有一个例子：https://symfony.com/doc/current/reference/forms/types/entity.html