如何自动序列化并从JSON响应中加载Ember Data对象？ [英] How do you automatically serialize and load an Ember Data object from a JSON response?

问题描述

我有一个这样定义的UserSession模型：

I have a UserSession model defined as such:

App.UserSession = DS.Model.extend({
  authToken: attr('string'),
  firstName: attr('string'),
  lastName: attr('string')
});

当用户登录时，我对我的后端做了一个AJAX POST请求返回JSON表示，例如：

When a user is logging in, I'm making an AJAX POST request to my back-end which return a JSON representation such as:

{
  "user_session": {
    "id": 1,
    "auth_token": "token_here",
    "first_name": "John",
    "last_name": "Doe"
  }
}

现在正常情况下，如果我要执行以下操作，Ember Data将会自动序列化JSON并添加对象：

Now normally, if I were to do the following, Ember Data would take care of automatically serializing the JSON and adding the object:

App.UserSession.find(<session-id>);

当我制作手动AJAX调用时，是否有一个简单的方法来加载JSON返回进入Ember数据存储对象，而不必手动反序列化它？

When I'm making a manual AJAX call though, is there an easy way to load the JSON returned into an Ember Data store object without having to manually deserialize it?

为清楚起见进行了修改：

以下强力>工作，但我希望找到一些功能，做上述的描述，可能看起来类似于下面的调用。

The below does not work, but I'm hoping to find some function that does what's described above, which may look similar to the call below.

App.UserSession.load(<session-json>);

推荐答案

如果您使用的是最新版本（11）对于垃圾数据，加载数据有一个突破性的变化。

If you're using the latest version (11) of ember-data there is a breaking change for loading data.

加载数据

以前，商店的某些功能（如load（））假设一个
单一适配器。

Previously, some features of the store, such as load(), assumed a single adapter.

如果你想从您的后端加载数据，而不需要
请求它（例如，通过WebSockets流），请使用此
API：

If you want to load data from your backend without the application asking for it (for example, through a WebSockets stream), use this API:

store.adapterForType(App.Person).load(store, App.Person, payload);

此API还将处理侧装和嵌入数据。我们计划在将来添加
a更方便的API。

This API will also handle sideloaded and embedded data. We plan to add a more convenient version of this API in the future.

https://github.com/emberjs/data/blob/master/BREAKING_CHANGES.md#loading-data

您将要抓住商店的实例。如果您在控制器中，您可以执行以下操作：

You're going to want to grab the instance of your store. If you're in a controller you can do:

@get('store')

您还可以：

App.__container__.lookup('store:main')

不建议使用它内部API（由__围绕容器调用指定），不能保证不会更改。

which isn't recommended as it's using the internal API (noted by the __ surrounding the container call) which isn't guaranteed to not change.

一旦你有你的商店实例，你可以加载到你的UserSession ：

Once you have your instance of the store you can load in your UserSession:

@get('store').adapterForType(App.UserSession).load(@get('store'), App.UserSession, sessionJson['user_session']);

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