本文介绍了为什么 fetch() 不起作用?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试从 JSON url 获取集合.主干确实发送了请求并得到了响应,但在它之后的集合中没有 models
:
I'm trying to fetch a collection from a JSON url. The backbone does send the request and does get a response but there are no models
in the collection after it:
这是我的 JavaScript:
Here is my JavaScript:
stores.fetch();
响应中的 JSON
[{"name":"Store 1"},{"name":"Store 2"},{"name":"Store 3"},{"name":"Store 4"}]
响应中的 Content-Type HTTP 标头是 application/json
.
The Content-Type HTTP header in the response is application/json
.
为什么它不加载到集合中?JSON 是否正确?
Why doesn't it load into the collection? Is the JSON correct?
更多代码:
be.storeList.Item = Backbone.Model.extend({
defaults: {
id: null,
name: null,
description: null
},
initialize:function(attrs){
attrs.id = this.cid;
this.set(attrs);
}
});
be.storeList.Items = Backbone.Collection.extend({
model: be.storeList.Item,
url:'/admin/stores'
});
var stores = new be.storeList.Items();
stores.fetch();
console.log(stores.toJSON());
推荐答案
fetch
是异步的.试试
stores.fetch({
success:function() {
console.log(stores.toJSON());
}
});
或
stores.on("sync", function() {
console.log(stores.toJSON());
});
stores.fetch();
或
stores.fetch().then(function() {
console.log(stores.toJSON());
});
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