Angular model with factory

angular-controller.js

/* @ngInject */
function GouzigouzaController($scope, Gouzigouza) {

    $scope.gouzigouza = new Gougigouza({
        code: 'CODE'
    });
}

angular
    .module('my.namespace.controllers')
    .controller('GouzigouzaController', GouzigouzaController);

angular-model-factory.js

function GouzigouzaFactory() {

    var Gouzigouza = function Gouzigouza (data) {
        this.id: data.id;
        this.code: data.code;
    };

    Gouzigouza.prototype = {
        /**
         * @returns {boolean}
         */
        isNew: function() {
            return !this.id;
        }
    };

    return Gouzigouza;
}

angular
    .module('my.namespace.resources')
    .factory('Gouzigouza', GouzigouzaFactory);

function GouzigouzaFactory() {

 return Class.extend({

      init: function(config) {
          this.id = config.id
          this.code = config.code
      },

      isNew: function() {
          return !this.id;
      }
 });

}

angular
.module('my.namespace.resources')
.factory('Gouzigouza', GouzigouzaFactory);