Sorting Backbone Collections By Attributes Other Than Model ID

By default, Backbone.Collection is sorted by model id (usually from the database). If you want to sort by another attribute, you need to define a comparator function. Here is an example that words for a boolean value

var Tags = Backbone.Collection.extend({

	sort_key: 'id', // default sort key

	comparator: function(item) {
		return !item.get(this.sort_key);
	},
	
	sortByField: function(fieldName) {
		this.sort_key = fieldName;
		this.sort();
	},

	model: FETCHER.Models.TagModel,

	url: '/api/v1/tags/',

});

After adding code like this to your collection, you can simply make a simple call like

FETCHER.Collections.Tags.sort("attribute")

And if attribute is boolean, the trues fill float to the top of the collection. Also, note that youc an re-render elements in your UI by listening to the sort call:

this.listenTo(FETCHER.Collections.Tags,'sort',this.render,this);