我正在尝试将模拟数据生成到我的应用程序中。根据要求,我的用户可以设置json
的大小。为此,我将用户带到新页面并从用户获取值。说small
,medium
,large
。一旦用户定义了大小,我就会更新我的收藏集的url
链接:
var api = "movies"; //default. later setting by dynamic
var getURL = function( size ){
console.log('api is', api);
return api;
}
var Theater = {
Models: {},
Collections: {},
Views: {},
Templates:{}
}
Theater.Models.Movie = Backbone.Model.extend({});
Theater.Collections.Movies = Backbone.Collection.extend({
model: Theater.Models.Movie,
urlRoot : getURL(),
url : function(){
console.log( "json from", "scripts/data/" + this.urlRoot+".json" );
return "scripts/data/" + this.urlRoot+".json"; //dynamic
},
initialize: function(){
console.log("Movies initialize");
}
});
这是视图部分:
Theater.Templates.simulator = _.template($("#tmplt-simulator").html());
Theater.Views.Simulator = Backbone.View.extend({
el: $("#mainContainer"),
events :{
"click .radioBtn" : "setDataSize"
},
template : Theater.Templates.simulator,
initialize: function () {
_.bindAll(this, 'render');
this.render();
},
render: function () {
this.$el.empty();
return $(this.el).append(this.template()) ;
},
setDataSize : function(e){
e.preventDefault();
var size = e.target.value;
api = size; //updating the URL but not working when go back to home
}
})
除了上述细节之外,还有完整的代码:full code
是否有人帮我处理这种情况?
提前感谢。
答案 0 :(得分:2)
集合并非真正具有由Backbone处理的内置urlRoot
属性。所以你定义的是一个自定义属性,只在创建集合构造函数时才计算一次。
你应该做的是:
url: function(){
return "scripts/data/" + getURL() + ".json";
// ------------------------^ something that is actually dynamic
},