RestApi的嵌入式数据 [英] Embedded data from RestApi

问题描述

我的数据来自REST API，如下所示：

My data comes from REST API like this:

customers:[
    id:3,
    name:"Joue",
    currency:{
        id:5
        iso_code:"BDT"
    }

]

我的模型：

App.Customer = DS.Model.extend({
        name: DS.attr('string'),
        currency: DS.attr('string')

});

我填充了一个可选择的货币的选择框，现在我想通过id选择5。
由于货币是嵌入的，它被解释为字符串我无法访问它。
据我所知，ember-data 1.0中不再支持嵌入式记录。

i populated a select box with the availabe currencies and now i want to select by "id" 5. Since currency is embedded and its interpreted as string i cant access it. As far as i know embedded records are no longer supported in ember-data 1.0.

我必须重写我的REST Api并摆脱关系或者有一个解决方法。

do i have to rewrite my REST Api and get rid of the relationships or there is a workaround .

推荐答案

您可以为数据创建自定义序列化程序。

You can just create a custom serializer for the data.

使用你的数据（稍微修改，因为json是无效的，我猜这只是因为它是手写的？）

Using your data (slightly modified, since the json isn't valid, and I'm guessing that's just cause it was hand written?)

{
    customers:[
     {
      id:3,
      name:"Joue",
      currency:{
        id:5,
        iso_code:"BDT"
      }
    }
   ]
}

这是一个特定响应类型的序列化器（在这里阅读更多信息 https://github.com/emberjs/data/blob/master/TRANSITION.md ）

Here's a serializer for that particular response type (read more about it here https://github.com/emberjs/data/blob/master/TRANSITION.md)

App.CustomerSerializer = DS.RESTSerializer.extend({
  extractArray: function(store, type, payload, id, requestType) {
    var customers = payload.customers,
        currencies = [];

    customers.forEach(function(cust) {
      var currency = cust.currency;
      delete cust.currency;
      if(currency){
        currencies.push(currency);
        cust.currency = currency.id;
      }
    });

    payload = { customers:customers, currencies: currencies };

    return this._super(store, type, payload, id, requestType);
  }
});

您使用关系定义的模型

App.Customer = DS.Model.extend({
    name: DS.attr('string'),
    currency: DS.belongsTo('currency')
});

App.Currency = DS.Model.extend({
    iso_code: DS.attr('string')
});

示例：

http://emberjs.jsbin.com/OxIDiVU/535/edit

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