所以我设法弄清楚如何从外部文件填充我的集合,并根据 url 呈现视图,但我遇到了问题。下面的代码按预期工作,除了页面加载,我收到以下错误:
Uncaught TypeError: Cannot call method 'get' of undefined
摆脱“view.render()”消除了错误,但现在应用程序不再响应 url 中的 ID 更改(例如,从 #/donuts/1 到 #/donuts/2 不会更新视图)
有人可以在这里指出我正确的方向吗?
编码:
(function(){
var Donut = Backbone.Model.extend({
defaults: {
name: null,
sprinkles: null,
cream_filled: null
}
});
var Donuts = Backbone.Collection.extend({
url: 'json.json',
model: Donut,
initialize: function() {
this.fetch();
}
})
var donuts = new Donuts();
var donutView = Backbone.View.extend({
initialize: function() {
this.collection.bind("reset", this.render, this)
},
render: function() {
console.log(this.collection.models[this.id].get('name'))
}
});
var App = Backbone.Router.extend({
routes: {
"donut/:id" : 'donutName',
},
donutName: function(id) {
var view = new donutView({
collection: donuts,
id: id
});
view.render();
}
});
var app = new App();
Backbone.history.start();
})(jQuery);
JSON:
[
{
"name": "Boston Cream",
"sprinkles" : "false",
"cream_filled": "true"
},
{
"name": "Plain",
"sprinkles": "false",
"cream_filled": "false"
},
{
"name": "Sprinkles",
"sprinkles": "true",
"cream_filled": "false"
}
]