gistfile1.js

TypeError: Object function g(a){v(a||{},this)} has no method 'update'
    at g.Product.update (http://localhost:61011/js/product.js:9:32)
    at Object.EditCtrl.$scope.save (http://localhost:61011/js/productedit.js:32:24)
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.min.js:71:276
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.min.js:142:402
    at Object.e.$eval (https://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.min.js:87:347)
    at Object.e.$apply (https://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.min.js:87:454)
    at HTMLButtonElement.<anonymous> (https://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.min.js:142:384)
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.min.js:23:92
    at Array.forEach (native)
    at n (https://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.min.js:6:192) 

angular.module('product', ['ngResource']).
    factory('Product', function($resource) {
        var Product = $resource('/product/get/:id',
            {
               // update: { method: 'PUT' }
            });
        
        Product.prototype.update = function(cb) {
                return Product.update({ id: this.Id.$oid },  <--- error fires here
                angular.extend({}, this, { id: undefined }), cb);
        };

        Product.prototype.destroy = function(cb) {
            return Product.remove({ id: this._id.$oid }, cb);
        };

        return Product;
    });