当获取一个集合时,我的api响应有10个对象,但是生成的Backbone集合只有1个模型,其中一个属性数组包含10个响应对象....换句话说,fetch不创建模型我的回答中的对象......我不知道为什么。
模型定义:
MyApp.Item = Backbone.Model.extend({
initialize: function(){
}
});
收藏定义:
MyApp.ItemCollection = Backbone.Collection.extend({
model: MyApp.Item,
url: '/api/v1/item/',
parse : function(response){
//api returns objects in the content attribute of response, need to override parse
return response.content;
}
});
调用fetch:
var myCollection = new MyApp.ItemCollection();
myCollection.fetch({
traditional: true,
data: { //url params for api call
u_id: currentUser.id,
order: 'sort_date:desc',
start: 0,
num_items: 10,
format:'json'}
});
结果:
的console.log(response.content);
4571221007823F95BAAFB2BDF81111XX: Object
0124207763051005AAF59694458EBFXX: Object
3324207755431003B589CEF237DBE1XX: Object
3470000061641005BFB5D9983156E0XX: Object
3515553061641005A02884677F5624XX: Object
3526033426761006AFEA9852B0DDB5XX: Object
21431252714010079E4D8413429DB0XX: Object
26570547220410068F60D1B07D2E08XX: Object
37557124663710079DDC81EE855981XX: Object
0152243312031007957B94F5073B69XX: Object
//api successfully returns an array of objects, with GUID as key
的console.log(myCollection)将
r {length: 1, models: Array[1], _byId: Object}
//why only one model? why not 10?
的console.log(myCollection.models [0] .attributes);
4571221007823F95BAAFB2BDF81111XX: Object
0124207763051005AAF59694458EBFXX: Object
3324207755431003B589CEF237DBE1XX: Object
3470000061641005BFB5D9983156E0XX: Object
3515553061641005A02884677F5624XX: Object
3526033426761006AFEA9852B0DDB5XX: Object
21431252714010079E4D8413429DB0XX: Object
26570547220410068F60D1B07D2E08XX: Object
37557124663710079DDC81EE855981XX: Object
0152243312031007957B94F5073B69XX: Object
__proto__: Object
//there they are...but why?
如何更改提取以将这些对象添加为myCollection中的单个模型?
答案 0 :(得分:1)
响应必须是数组。数组中的每个项目都变成了一个模型。你的回答是一个对象。
更新你的parse方法,将值(作为一个数组)从响应中拉出到一个数组中,然后就可以了。
MyApp.ItemCollection = Backbone.Collection.extend({
model: MyApp.Item,
url: '/api/v1/item/',
parse : function(response){
//api returns objects in the content attribute of response, need to override parse
return _.map(response.content, function(model, id) {
model.id = id;
return model;
});
}
});