在Backbone模型中访问数组

Question

大家好，

如何访问Backbone中此阵列中每个对象的字段（Employees＆amp; Location）？

var DataModel = Backbone.Model.extend({
    // urlRoot: "https://corporate-dashboard.firebaseio.com/locations.json"
    urlRoot: ""
});

var locationModel = new DataModel();
locationModel.urlRoot = "https://corporate-dashboard.firebaseio.com/locations.json"
locationModel.fetch()



console.log(locationModel.get("Location")); >> Got "undefined"
tried locationModel.get(0) and locationModel[0] >> got "undefined"

谢谢！

Answer 1

在这里，您可以从终端获取Backbone Collection个模型。比您可以访问所有模型。

Collection Models：对集合内JavaScript模型数组的原始访问。通常，您希望使用get，at或Underscore methods来访问模型对象，但有时需要直接引用该数组：

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var DataCollection = Backbone.Collection.extend({
    url: 'https://corporate-dashboard.firebaseio.com/locations.json'
});

var locationCollection = new DataCollection();
locationCollection.once('sync', function(r) {
    console.log('Collection length: ', r.length);
    console.log(r.models[0]);
    console.log(r.models[0].get('Employees'));
    console.log(r.models[0].get('Location'));
});
locationCollection.fetch();
    

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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min.js"></script>

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