gistfile1.txt

    var _super = module.Order;
    module.Order = module.Order.extend({

        init_from_JSON: function(json) {
            _super.prototype.init_from_JSON.apply(this,arguments);
            this.note = json.note;
        },

        export_as_JSON: function(){
            var json = _super.prototype.export_as_JSON.apply(this,arguments);
            json.note = this.note;
            return json;
        },

        export_for_printing: function(){
          var receipt = _super.prototype.export_as_printing.apply(this, arguments);
          receipt.note = this.note;
          return receipt;
        }

    });