使用 Symfony 序列化程序组件和 AbstractNormalizer::OBJECT_TO_POPULATE 反序列化一个实体数组

Question

我已经反序列化为一个对象数组：

$encoders = [new JsonEncoder()];
$normalizers = [new ObjectNormalizer(), new GetSetMethodNormalizer(), new ArrayDenormalizer()];
$serializer = new Serializer($normalizers, $encoders);

$clients = $serializer->deserialize($myJson, 'App\Entity\Client[]', 'json');

并且还将一个实体反序列化为现有实体（在数据库中不插入但更新）：

$clientDb = $clientRepository->find(1);
$client = $serializer->deserialize($myJson, Client::class, 'json', [AbstractNormalizer::OBJECT_TO_POPULATE => $clientDb ]);

但是当我想两者都做时，学说只插入数据库：

$clients = $serializer->deserialize($myJson, 'App\Entity\Client[]', 'json', [AbstractNormalizer::OBJECT_TO_POPULATE => $clientRepository->findAll()]);

我是不是漏掉了什么？

-- 我找到的官方文档没有提到：https://symfony.com/doc/current/components/serializer.html#deserializing-in-an-existing-object --

编辑：我设法通过将 json 解码到数组中手动完成，然后在其上循环，重新编码为 json 循环中的每个项目，最后反序列化它们。但是，如果有一种不用 decode/loop/encode 的方法，我更愿意使用它！

Answer 1

从您提到的 documentation 中检查以下信息：

The AbstractNormalizer::OBJECT_TO_POPULATE is only used for the top level object. If that object is the root of a tree structure, all child elements that exist in the normalized data will be re-created with new instances.

When the AbstractObjectNormalizer::DEEP_OBJECT_TO_POPULATE option is set to true, existing children of the root OBJECT_TO_POPULATE are updated from the normalized data, instead of the denormalizer re-creating them. Note that DEEP_OBJECT_TO_POPULATE only works for single child objects, but not for arrays of objects. Those will still be replaced when present in the normalized data.

因此基于此，不支持一次填充对象数组。你必须遍历你的数组。

使用 Symfony 序列化程序组件和 AbstractNormalizer::OBJECT_TO_POPULATE 反序列化一个实体数组

Deserialize a entities array with Symfony Serializer Component and AbstractNormalizer::OBJECT_TO_POPULATE

php

json

symfony

doctrine-orm

deserialization