define(['jquery', 'underscore', 'backbone', 'goatApp/model/HTMLContentModel'], function($, _, Backbone, HTMLContentModel) { return HTMLContentModel.extend({ url:'service/source.mvc', checkNullModel: function () { //TODO: move this function into HTMLContentModel and make the string a property of this 'child' model if (this.get('content').indexOf("Could not find the source file or") > -1) { this.set('content',null); } } }); });