$ rootlcope在$ urlRouterProvider.otherwise中未定义

Question

我在$ urlRouterProvider.otherwise中使用它时,$ rootScope是未定义的.

我的目标是检查用户当前是否登录,在登录期间我在rootScope上设置变量.

有趣的是,如果我将$ rootScope作为第一个参数,那么我开始得到$ injector的错误.

$urlRouterProvider.otherwise(function ($injector, $location, $rootScope) {
        console.log("Otherwise Executed");

        try {

            var $state = $injector.get("$state");

            toastr.options.positionClass = "toast-top-full-width";
            toastr["error"]($location.$$path + ", Page not Found, names are case sensitive !");
            toastr.options.positionClass = "toast-top-right";

            if (typeof $rootScope.currentUser === 'undefined')
                $state.go("Login");
            else
                $state.go("dashboard"); //redirect to a 404 page
        } catch (e) {
          return "/login"
        }

    });

Answer 1

来自urlRouter源代码

* @param {string|object} rule The url path you want to redirect to or a function 
* rule that returns the url path. The function version is passed two params: 
* `$injector` and `$location` services, and must return a url string.
*
* @return {object} `$urlRouterProvider` - `$urlRouterProvider` instance
*/
this.otherwise = function (rule) {

使用 var $rootScope = $injector.get("$rootScope");