ApplicationModel.js

ns("decide").ApplicationModel = Backbone.Model.extend({

	sync: function(method, model, options) {
		// Our overriden sync supports these events:
		// sync:start
		// sync:success
		// sync:error
		// sync:complete
		//
		// Params dispatched with the event:
		// method, model, status
		//
		this.trigger('sync:start', method, model);
		this.isLoading = true;

		options = options || {};
		var complete = function(status) { model.trigger('sync:complete', method, model, status); 
			model.isLoading = false; };
		var modifiedOpts = {
			success: function(resp, status, xhr) {
				model.trigger('sync:success', method, model, status);
				complete(status);
				if (_.has(options, 'success')) { options.success(resp, status, xhr); }
			},
			error: function(resp, status, xhr) {
				model.trigger('sync:error', method, model, status);
				complete(status);
				if (_.has(options, 'error')) { options.error(resp, status, xhr); }
			}
		};
		
		// Use Backbone's native sync to finish the job
		Backbone.sync.call(this, method, model, modifiedOpts);
	}

});