我没有通过所有code的阅读，所以我不能给任何其他问题发言，但我马上就可以看到一个问题您GROUPBY功能。如果你使用App.Collections.Items，你不会是通过在视图中的函数实例化的集合;你会路过空集合构造对象的功能！另外，你需要把收集到JSON。你想要的是像这样的东西更多：

I haven't read through all of your code, so I can't speak to any other problems, but I can immediately see a problem with your groupBy function. If you use App.Collections.Items, you're not going to be passing the collection instantiated in the view to the function; you're going to be passing the empty Collection constructor object to the function! Also, you need to turn the collection into JSON. What you want is something more like this:

var groups = _.groupBy(this.collection.toJSON(), 'category');