一个关于 ember.js 的 serializer 问题

Question

ember 的 REST Adapter 期待的 json (customer/:customer_id)是下面这样的格式的：

{
    "customer": {
         "CustomerID": "ALFKI",
        "CompanyName": "Alfreds Futterkiste",
        "ContactName": "Maria Anders",
        "ContactTitle": "Sales Representative",
        "id": "b0d16ed0-c901-4ca3-ba41-7fc74c96909f"
   }
}

但是我的服务器的 API 是这样的:

{
        "CustomerID": "ALFKI",
        "CompanyName": "Alfreds Futterkiste",
        "ContactName": "Maria Anders",
        "ContactTitle": "Sales Representative",
        "id": "b0d16ed0-c901-4ca3-ba41-7fc74c96909f"
}

于是我可以这样（在 app/serializers/customer.js 文件里）：

  serializeIntoHash: function(data, type, record, options) {
      Ember.merge(data, this.serialize(record, options));
  }

这样就解决问题了。

但是另外一个问题是，我的服务器返回所有 coustomers 的 API 是这样的：

{
    "value": [
        {
        "CustomerID": "ALFKI",
        "CompanyName": "Alfreds Futterkiste",
        "ContactName": "Maria Anders",
        "ContactTitle": "Sales Representative",
        "id": "b0d16ed0-c901-4ca3-ba41-7fc74c96909f"
    },
    {
        "CustomerID": "ANATR",
        "CompanyName": "Ana Trujillo Emparedados y helados",
        "ContactName": "Ana Trujillo",
        "ContactTitle": "Owner",
        "id": "3f8ac226-9f78-42df-b337-0505f69792c3"
    },
    {
        "CustomerID": "ANTON",
        "CompanyName": "Antonio Moreno Taquería",
        "ContactName": "Antonio Moreno",
        "ContactTitle": "Owner",
        "id": "09d31df6-69f4-43e4-9cc6-7faa5b8b5e3b"
    }]
}

我怎样像上面那个 customer/:customer_id 例子一样，把返回所有 customers 的 API
变成 ember 的 /customers 所期待的那样呢？

Answer 1

在你的app/serializers/customer.js文件中创建下面的方法

extractArray: function(store, typeClass, payload){
    //payload是后台传过来的数据
    //在这里把payload的数据转成ember标准格式。
    payload.customers = payload.value;
    delete(payload.value);
    return this._super.apply(this, arguments)
}