$rootScope.currentUser 刷新时为空 [英] $rootScope.currentUser is null on refresh

问题描述

我能够让 firebaseSimpleLogin 工作并将当前用户存储在 rootScope 中.当我转到另一个页面并返回提要页面时，所有内容都会加载，但是当我刷新 $rootScope.currentUser 时为空.有其他人遇到过这个问题吗?

I was able to get the firebaseSimpleLogin working and storing the current user in the rootScope. When I goto another page and come back to the feed page everything loads, but when I refresh $rootScope.currentUser is null. Has anyone else had this issue?

我的 app.run 函数中有这段代码:

I have this piece of code in my app.run function:

$rootScope.$on('$firebaseSimpleLogin:login',function(e, auth){
   $rootScope.currentUser = User.find(auth.id);
});

这是我的 FeedCtrl，它试图加载用户的帖子

And this is my FeedCtrl that is trying to load in the user's posts

app.controller('FeedCtrl',['$scope', '$rootScope','User','Auth','Post',function($scope,     $rootScope,User,Auth,Post){
 populateFeed();
 console.log($rootScope.currentUser);

$scope.logout = function(){
   Auth.logout();
};


$scope.savePost = function(){
  Post.create($scope.post).then(function(post){
    $scope.post.text = "";
  });
};

function populateFeed(){
   $scope.posts = {};
   angular.forEach($rootScope.currentUser.posts,function(id){
    $scope.posts[id] = Post.find(id);
   });
}

}]);

我的主应用模块

var app = angular.module('myapp',['ui.router','firebase']);

app.config(function($stateProvider, $urlRouterProvider){
  $stateProvider
.state('/',{
  url: '/',
  controller: 'MainCtrl',
  templateUrl: 'views/index.html'
})
.state('feed',{
  url: '/feed',
  controller: 'FeedCtrl',
  templateUrl: 'views/feed.html',
  authenticate: true
})
.state('login',{
  url: '/login',
  controller: 'LoginCtrl',
  templateUrl: 'views/login.html'
})
.state('signup',{
  url: '/signup',
  controller: 'LoginCtrl',
  templateUrl: 'views/signup.html'
})
.state('settings',{
  url: '/settings',
  controller: 'SettingsCtrl',
  templateUrl:"views/settings.html"
})
.state('profile',{
  url: '/:slug',
  controller: 'ProfileCtrl',
  templateUrl: 'views/profile.html'
})
.state('profile-about',{
  url: '/:slug/about',
  controller: 'ProfileCtrl',
  templateUrl: 'views/profile.html'
});

$urlRouterProvider.otherwise('/');
})
.constant('FIREBASE_URL','https://{FIREBASE}.firebaseio.com/')
.run(function($rootScope, $state,FIREBASE_URL, $firebaseSimpleLogin, User, Auth){
$rootScope.$on('$stateChangeStart',function(event, next){
  if(next.authenticate && !User.getCurrentUser()){
     $state.go('login');
  }
 });

 $rootScope.$on('$firebaseSimpleLogin:login',function(e, auth){
   $rootScope.currentUser = User.find(auth.id);
  });

 $rootScope.$on('$firebaseSimpleLogin:logout',function(){
  delete $rootScope.currentUser;
  $state.go('login');
 });

 $rootScope.logout = function(){
  Auth.logout();
};

});

推荐答案

如果你所说的刷新"是指你在浏览器中按 F5 键，这将从内存中擦除你的 $rootscope 并且你会在你体验时返回 null(基本上您的整个应用程序将重新启动").

If you by 'refresh' mean that you hit F5 in the browser that will wipe your $rootscope from memory and you will get null back as you experience (basically your entire app will be 'restarted').

为了持久化值，您需要将它们存储在 cookie 中或使用 localStorage/sessionStorage.例如，不要使用 $rootscope.currentUser 使用 $window.sessionStorage.currentUser.

In order to persist values you either need to store them in a cookie or use localStorage/sessionStorage. For example, instead of using $rootscope.currentUser use $window.sessionStorage.currentUser.

这篇关于$rootScope.currentUser 刷新时为空的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！