Backbone.js StreamingCollection

StreamingCollection.js

var StreamCollection = Backbone.Collection.extend({
	stream: function(options) {
		this.unstream();
		var _update = _.bind(function() {
			this.fetch(options);
			this._intervalFetch = window.setTimeout(_update, options.interval || 1000);
			}, this);
		
		_update();
	},
	unstream: function() {
		window.clearTimeout(this._intervalFetch);
		delete this._intervalFetch;
	},
	isStreaming: function() {
		return _.isUndefined(this._intervalFetch);
	}
});

// someCollection.stream({interval: 2000, add: true});
// see http://weblog.bocoup.com/backbone-live-collections for other notes