angularjs , log in redirect ng-router

http://stackoverflow.com/questions/11541695/redirecting-to-a-certain-route-based-on-condition

'use strict';

var app = angular.module('app', [])
    .config(['$routeProvider', function($routeProvider) {
        $routeProvider
            .when('/', {
                templateUrl: "login.html",
                controller: LoginController
            })
            .when('/private', {
                templateUrl: "private.html",
                controller: PrivateController,
                resolve: {
                    factory: checkRouting
                }
            })
            .when('/private/anotherpage', {
                templateUrl:"another-private.html",
                controller: AnotherPriveController,
                resolve: {
                    factory: checkRouting
                }
            })
            .otherwise({ redirectTo: '/' });
    }]);

var checkRouting= function ($q, $rootScope, $location) {
    if ($rootScope.userProfile) {
        return true;
    } else {
        var deferred = $q.defer();
        $http.post("/loadUserProfile", { userToken: "blah" })
            .success(function (response) {
                $rootScope.userProfile = response.userProfile;
                deferred.resolve(true);
            })
            .error(function () {
                deferred.reject();
                $location.path("/");
             });
        return deferred.promise;
    }
};

=========================


angular.module('yoApp')
  .service('appService', function ($q, $timeout, $rootScope, $location) {


this.isAdmin=function(){
console.log("isAdmin");

       var deferred = $q.defer();

      deferred.resolve(true);
       // deferred.reject();
       // $location.path("/about");

       return deferred.promise;
}
});



  .config(function ($routeProvider) {

    $routeProvider
      .when('/me', {
        template: '<h1> me </h1>',
        resolve: {
            factory: function(appService) {
              return appService.isAdmin();
            }
        }
      })


  });