反序列化与 Symfony Serializer Component 有关系的实体 [英] Deserialize an entity with a relationship with Symfony Serializer Component

问题描述

我正在尝试使用 symfony 序列化器组件反序列化具有关系的实体.这是我的实体:

I'm trying to deserialize an entity with a relationship using the symfony serializer component. This is my entity:

namespace AppBundleEntity;

use DoctrineORMMapping as ORM;

/**
 * Document
 *
 * @ORMTable(name="document")
 * @ORMEntity(repositoryClass="AppBundleRepositoryDocumentRepository")
 */
class Document
{
    /**
     * @var int
     *
     * @ORMColumn(name="id", type="integer")
     * @ORMId
     * @ORMGeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @ORMManyToOne(targetEntity="Genre", inversedBy="documents")
     * @ORMJoinColumn(name="id_genre", referencedColumnName="id")
     */
    private $genre;

    /**
     * @var string
     *
     * @ORMColumn(name="name", type="string", length=100)
     */
    private $name;

    //getters and setters down here
    ...
}

以及流派实体:

namespace AppBundleEntity;

use DoctrineORMMapping as ORM;
use DoctrineCommonCollectionsArrayCollection;

/**
 * Genre
 *
 * @ORMTable(name="genre")
 * @ORMEntity(repositoryClass="AppBundleRepositoryGenreRepository")
 */
class Genre
{
    /**
     * @var int
     *
     * @ORMColumn(name="id", type="integer")
     * @ORMId
     * @ORMGeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @var string
     *
     * @ORMColumn(name="name", type="string", length=50, nullable=true)
     */
    private $name;

    /**
     * @ORMOneToMany(targetEntity="Document", mappedBy="genre")
     */
    private $documents;

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

    //getters and setters down here
    ....
}

在我的控制器操作中，我现在正在尝试:

In my controller action right now I'm trying this:

$encoders = array(new JsonEncoder());
$normalizers = array(new ObjectNormalizer());
$serializer = new Serializer($normalizers, $encoders);

$document = $serializer->deserialize($request->getContent(), 'AppBundleEntityDocument', 'json');

还有我的json 数据:

{"name": "My document", "genre": {"id": 1, "name": "My genre"}}

但是我遇到了下一个错误:

AppBundleEntityGenre"类型的预期参数，给出数组"(500内部服务器错误)

Expected argument of type "AppBundleEntityGenre", "array" given (500 Internal Server Error)

是否可以反序列化带有内部关系的实体的 json 请求?

Is possible to deserialize a json request with an entity with relations inside?

提前致谢.

推荐答案

是和否.首先，您不应在控制器中重新创建序列化程序的新实例，而应改用 serializer 服务.

Yes and no. First, you shouldn't re-create a new instance of the serializer in your controller but use the serializer service instead.

第二，不，Symfony 序列化程序不可能开箱即用.我们在 https://api-platform.com/ 中这样做，但那里有一些魔法.也就是说，已经制作了一个 PR 来支持它:https://github.com/symfony/symfony/pull/19277

Second, no it's not possible out of the box with Symfony serializer. We are doing it in https://api-platform.com/ but there is a bit of magic there. That said, a PR has been made to support it: https://github.com/symfony/symfony/pull/19277

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