Angularjs extends service

As usual I'm wondering if there is a better way to do:

(The code extends a angular service)

(function(window, angular, undefined) {
        'use strict';
        angular.module('api.base', ['restangular'])
            .factory('Base', function(Restangular) {
                return function(route){
                    var elements = Restangular.all(route); 
                    return {
                        one : function (id) {
                            return Restangular.one(route, id).get();
                        },
                        all : function (id) {
                            return elements.getList();
                        },
                        store : function(data) {
                            return elements.post(data);
                        },
                        copy : function(original) {
                            return Restangular.copy(original);
                        },
                        getElements : function() {
                           return elements;
                        }
                    }
                }  
            })
    })(window, angular);

    (function(window, angular, undefined) {
        'use strict';
        angular.module('api.post', ['api.base'])
            .factory('Post', function(Base) {
                function ngPost() {
                    this.prop = ['publish','draft'];
                    this.myMethod = function(){}
                };
                return angular.extend(Base('post'), new ngPost());
            })
    })(window, angular);

Update nice :)

(function(window, angular, undefined) {
    'use strict';
    angular.module('nodblog.api.comment', ['nodblog.api.base'])
        .config(function(RestangularProvider) {
            RestangularProvider.setRestangularFields({
                id: "_id"
            });
        })
        .factory('Comment', function(Base) {
            function NgComment() {
                this.byPostId = function(id){
                    return this.getElements().one('post',id).getList();
                 }
            };
            return angular.extend(Base('comment'), new NgComment());
        });
})(window, angular);