Question

我正在使用Backbone通过REST API检索数据。我的代码如下：

var PlayerModel = Backbone.Model.extend({});

var PlayersCollection = Backbone.Collection.extend({
    url: "http://api.football-data.org/v1/teams/81/players",
    model: PlayerModel
});

var catalons = new PlayersCollection();
catalons.fetch();

如果我在POSTMAN中执行GET请求，这是我收到的JSON输出

 {
  "_links": {
    "self": {
      "href": "http://api.football-data.org/v1/teams/81/players"
    },
    "team": {
      "href": "http://api.football-data.org/v1/teams/81"
    }
  },
  "count": 24,
  "players": [
    {
      "name": "Marc-André ter Stegen",
      "position": "Keeper",
      "jerseyNumber": 1,
      "dateOfBirth": "1992-04-30",
      "nationality": "Germany",
      "contractUntil": "2019-06-30",
      "marketValue": "15,000,000 €"
    },
    {
      "name": "Claudio Bravo",
      "position": "Keeper",
      "jerseyNumber": 13,
      "dateOfBirth": "1983-04-13",
      "nationality": "Chile",
      "contractUntil": "2018-06-30",
      "marketValue": "15,000,000 €"
    }
 ]
}

我成功地能够使用fetch接收数据，我无法弄清楚的是如何解析所获取的数据，以便我的集合catalons只包含玩家？也就是说，如果我这样设置的话：

var catalons = new PlayersCollection(playerModelArray);

Answer 1

您可以使用Backbone's Collection parse方法执行此操作。您只需要在PlayersCollection原型定义中添加一个解析方法：

var PlayersCollection = Backbone.Collection.extend({
    url: "http://api.football-data.org/v1/teams/81/players",
    model: PlayerModel,
    parse: function (response) {
        return response.players;
    }
});

从Backbone.js中的Collection fetch构造模型

1 个答案: