没有 JSON 根的 Ember.js REST 适配器 [英] Ember.js REST Adapter without JSON root

问题描述

Ember.js REST Adapter 期望将 JSON 返回为:

The Ember.js REST Adapter expects the JSON to be returned as:

{
    "person": {
        "first_name": "Barack",
        "last_name": "Obama",
        "is_person_of_the_year": true
    }
}

但我的 API 返回的数据没有根元素:

But my API returns the data without a root element:

{
    "first_name": "Barack",
    "last_name": "Obama",
    "is_person_of_the_year": true
}

是否可以自定义 REST 适配器以便它接受我的 JSON 数据?现在它显示断言失败:您的服务器返回了一个密钥为 0 的哈希，但您没有映射"

Is it possible to customize the REST Adapter so that it accepts my JSON data? Right now it's showing "Assertion failed: Your server returned a hash with the key 0 but you have no mapping for it"

更新:基于以下宣伟的回答，这就是我想出的，到目前为止似乎有效:https://gist.github.com/richardkall/5910875

UPDATE: Based on Sherwin Yu's answer below, this is what I came up with, seems to work so far: https://gist.github.com/richardkall/5910875

推荐答案

是的，您可以编写自己的自定义 REST 适配器.查看 JSONSerializer 中的源代码, RESTSerializer(扩展了 JSONSerializer)，以及REST 适配器.

Yes, you can write your own custom REST adapter. Take a look at the source code in the JSONSerializer, RESTSerializer (which extends the JSONSerializer), and the REST adapter.

基本上，您需要覆盖 JSONSerializer 中的 extract* 方法.

Basically, the you need to override the extract* methods from the JSONSerializer.

目前，它看起来像这样:

Currently, it looks something like this:

extract: function(loader, json, type, record) {
  var root = this.rootForType(type);

  this.sideload(loader, type, json, root);
  this.extractMeta(loader, type, json);

  if (json[root]) {
    if (record) { loader.updateId(record, json[root]); }
    this.extractRecordRepresentation(loader, type, json[root]);
  }
},

注意它如何检查 json[root] -- 您必须根据预期的 API 响应编写自定义方法.

Notice how it checks json[root] -- you'd have to write your custom method based on your expected API response.

另一种方法是预处理"来自 API 的 json 以使用根元素.您可以通过找出哪些方法调用 extract*(将 json 传递给它)并在此之前修改 json 以包含根元素来完成此操作.

Another approach would be to "preprocess" the json from the API to use a root element. You could do this by finding out what methods call extract* (which passes it the json) and before it does so, modify the json to contain the root element.

希望对您有所帮助，如果不清楚，请告诉我.

Hope this helps, please let me know if it's unclear.

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