好的，我有一个返回播客的JSON提要的API。
这些播客出现在前端，但顺序与我需要的顺序完全相反。我更加困惑，因为它调用的JSON提供符合我想要的正确顺序，但我不能让它像前端那样工作。请看一下我正在使用的代码：
var cache = new CacheProvider;
var Photo = Backbone.Model.extend({
subalbum: function() { return 'c' + gallery._currentsub; }
});
var PhotoCollection = Backbone.Collection.extend({
model: Photo,
comparator: function(item) {
return item.get('pid');
}
});
function removeFallbacks(){
var query = $('.jstest,.gallery');
if(query.length){
query.remove();
}
}
var IndexView = Backbone.View.extend({
el: $('#main'),
indexTemplate: $("#indexTmpl").template(),
render: function() {
removeFallbacks();
var sg = this;
this.el.fadeOut('fast', function() {
sg.el.empty();
$.tmpl(sg.indexTemplate, sg.model.toArray()).appendTo(sg.el);
sg.el.fadeIn('fast');
});
return this;
}
});
var SubalbumView = Backbone.View.extend({
el: $('#main'),
indexTemplate: $("#subindexTmpl").template(),
initialize: function(options){
},
render: function() {
var sg = this;
removeFallbacks();
this.el.fadeOut('fast', function() {
sg.el.empty();
$.tmpl(sg.indexTemplate, sg.model.toArray()).appendTo(sg.el);
sg.el.fadeIn('fast');
});
return this;
}
});
var PhotoView = Backbone.View.extend({
el: $('#main'),
itemTemplate: $("#itemTmpl").template(),
initialize: function(options) {
this.album = options.album;
},
render: function() {
var sg = this;
removeFallbacks();
this.el.fadeOut('fast', function() {
sg.el.empty();
$.tmpl(sg.itemTemplate, sg.model).appendTo(sg.el);
sg.el.fadeIn('fast');
});
return this;
}
});
var Gallery = Backbone.Controller.extend({
_index: null,
_photos: null,
_album :null,
_subalbums:null,
_subphotos:null,
_data:null,
_photosview:null,
_currentsub:null,
routes: {
"": "index",
"subalbum/:id": "hashsub",
"subalbum/:id/" : "directphoto",
"subalbum/:id/:num" : "hashphoto"
},
initialize: function(options) {
var ws = this;
if (this._index === null){
$.ajax({
url: 'http://mikegradio.com/api/v1/podcasts/export/?tags__title=sports&sort_by=-rank&limit=50',
dataType: 'json',
data: {},
success: function(data) {
ws._data = data;
ws._photos = new PhotoCollection(data);
ws._index = new IndexView({model: ws._photos});
Backbone.history.loadUrl();
}
});
return this;
}
return this;
},
index: function() {
this._index.render();
},
hashsub:function(id){
var properindex = id.replace('c','');
this._currentsub = properindex;
this._subphotos = cache.get('pc' + properindex) || cache.set('pc' + properindex, new PhotoCollection(this._data[properindex].subalbum));
this._subalbums = cache.get('sv' + properindex) || cache.set('sv' + properindex, new SubalbumView({model: this._subphotos}));
this._subalbums.render();
},
directphoto: function(id){
},
hashphoto: function(num, id){
this._currentsub = num;
num = num.replace('c','');
if(this._subphotos == undefined){
this._subphotos = cache.get('pc' + num) || cache.set('pc' + num, new PhotoCollection(this._data[num].subalbum));
}
this._subphotos.at(id)._view = new PhotoView({model: this._subphotos.at(id)});
this._subphotos.at(id)._view.render();
}
});
gallery = new Gallery();
Backbone.history.start();
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" href="gallery.css" type="text/css" media="screen" charset="utf-8" />
<link rel="stylesheet" href="shadows.css" type="text/css" media="screen" charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<link rel="stylesheet" href="buttons.css" type="text/css" media="screen" charset="utf-8" />
<link rel="stylesheet" href="ipad.css" type="text/css" media="screen" charset="utf-8" />
<link rel="stylesheet" href="desktop.css" type="text/css" media="screen" charset="utf-8" />
<script id="indexTmpl" type="text/x-jquery-tmpl">
<div class="item drop-shadow round">
<div class="item-image">
<a href="#subalbum/${cid}"><img src="${attributes.image}" alt="${attributes.title}" />
</a>
</div>
</div>
</script>
<script id="subindexTmpl" type="text/x-jquery-tmpl">
<div class="track drop-shadow round">
<div class="item-image subalbum">
<div class="item-artist">${attributes.title}</div>
<audio controls preload="none" id="audioControl" id="audio-player" src="${attributes.media}" type="audio/mp3" controls="controls"></audio>
<div class="item-price">${attributes.duration}</div>
<a href="#subalbum/${subalbum}/${attributes.cid}">Shop</a>
</div>
</div>
</script>
<script id="itemTmpl" type="text/x-jquery-tmpl">
<div class="item-detail">
<div class="item-image drop-shadow round"><img src="${attributes.large_image}" alt="${attributes.title}" /></div>
<div class="item-info">
<div class="item-artist">${attributes.artist}</div>
<div class="item-title">${attributes.title}</div>
<div class="item-price">$${attributes.price}</div>
<br />
<div class="item-link"><a href="${attributes.url}" class="button">Buy this item</a></div>
<div class="back-link"><a href="#" class="button">« Back to Albums</a></div>
</div>
</div>
</script>
</head>
<body>
<div id="container">
<div id="main">
</div>
</div>
<script src="LAB.min.js" type="text/javascript"></script>
<script type="text/javascript">
$LAB
.script("jquery-1.4.4.min.js").wait()
.script("jquery.tmpl.min.js")
.script("underscore-min.js")
.script("backbone-min.js")
.script("cacheprovider.js").wait()
.script("gallery.js");
</script>
</body>
</html>
http://mikegradio.com/api/v1/podcasts/export/?tags__title=sports&sort_by=-rank&limit=50
任何帮助将不胜感激！
答案 0 :(得分：1)
您是否尝试对集合进行反向排序:(注意否定以使集合反转？）
comparator: function(item) {
return -item.get('pid');
}