如何访问从$ stateChangeStart一个UI的路由器根状态的“解析”的财产? [英] How do I access the 'resolve' property of a UI-Router root state from $stateChangeStart?

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问题描述

我想实现我的应用程序,用户身份验证检查和访问检查系统,但是我不断撞击路障。我觉得我有它正确的方式,但这次我还有最后一个障碍。

一个小背景:我试图把所有code进入$ rootScope.on($ startChangeStart)和它的工作,可怕的......但它的工作。路线总是重定向,但由于对后端AUTH检查它显示的第一个请求页面一秒钟,然后重定向页面,每次1/2。因此,我试图通过调用EVT'暂停'的页面加载。preventDefault()就在$ startChangeStart功能,它的工作的开始,而是试图把用户返回到原来的路线之后引起了路由器无限循环

所以经过更多的研究和阅读了大量的堆栈帖子我敢肯定,决心:就是把AUTH检查,以确保当它出现的页面没有加载,然后将用户重定向正确的地方,如果需要的从$ startChangeStart。 ($状态和事件总是在我尝试将它们注入到下决心功能未定义)这似乎是最佳组合。

我的问题:我有我的应用程序的根状态的决心:主

这是为了避免code冗余,但是我不能确定如何访问根状态的属性,因此决心结果,从$ stateChangeStart功能。使用toState是孩子的状态,而fromState要么是previous状态或使用'^'路线的抽象状态...

我必须把解决对每一个孩子的状态这个工作,或者是有没有办法从这个角度访问根状态?

基本应用程序设置:

  angular.module('应用',['ui.router','ui.bootstrap','ui.event','AngularGM','ngResource'])
的.config(['$ urlRouterProvider','$ stateProvider',函数($ urlRouterProvider,$ stateProvider){
    $ urlRouterProvider
        。当('/家','/')
        。什么时候('', '/')
        。当('/签上/乔','/申请)
        。除此以外('/');    $ stateProvider
        .STATE('主',{
            网址:'',
            摘要:真实,
            templateUrl:意见/ main.html中,
            控制器:'MainCtrl',
            解析:{
                的checkAccess:['的AccountService',函数(的AccountService){
                    accountService.checkAuth(函数(){
                        accountService.checkAccess(功能(访问){
                            返回访问;
                        });
                    });
                }]
            }
        })
        .STATE('main.home',{
            网址:'',
            摘要:真实,
            templateUrl:意见/ home.html做为',
            控制器:'HomeCtrl
        })
        .STATE('main.home.index',{
            网址:'/',
            templateUrl:意见的/ home / index.html的
        });
.RUN(['$ rootScope','$州','$ stateParams','AccountService的',函数($ rootScope,$状态,$ stateParams){
    $ rootScope $状态= $状态。
    $ rootScope $ stateParams = $ stateParams。
    $ rootScope。在$('$ stateChangeStart',函数(事件,toState,toParams,fromState,fromParams){
        console.dir(toState);
        console.dir(toParams);
        console.dir(fromState);
        console.dir(fromParams);
        如果(!toState.checkAccess.allowed){
            。事件preventDefault();
            $ state.transitionTo(toState.checkAccess.newState);
        }
    });
}]);

这是从console.dir(输出)上的两个状态对象调用:

 对象
 名称:main.home.index
 templateUrl:意见的/ home / index.html的
 网址:/
 __proto__:对象目的
 控制器:PlacesCtrl
 名称:main.places.search
 templateUrl:意见/ places.html
 网址:/地方
 __proto__:对象

更新

哎呀,忘了提AngularJS版本是V1.2.0,rc.2

$ state.current console.dir()

 对象
 摘要:真
 名称:
 网址:^
 观点:空
 __proto__:对象


解决方案

是的,我相信你可以从 $ stateChangeStart 函数访问根状态。

在使用纯AngularJS我通常使用电流。$$路线

例如,使用下面的路线

 。当('/家',{
  标题:'家',
  bodyClass:'会议',
  CONTROLER:HomeCtrl
})

我可以访问像这样的根州

  $ rootScope。在('$ routeChangeSuccess',函数(事件,目前,previous){$   如果(电流。$$路线){     $ rootScope.title =当前$$ route.title。     $ rootScope.bodyClass =当前$$ route.bodyClass。
   } });

使用 UI路由器这只是一个有点不同,因为它被称为 $ state.current 。和你打什么路线,你可以访问相关联的所有属性(如:$ state.current.url)

所以,在你的code,你可以有这样的事情

  .RUN(['$ rootScope','$州','$ stateParams',函数($ rootScope,$状态,$ stateParams){      $ rootScope。在$('$ stateChangeStart',函数(事件,toState,toParams,fromState,fromParams){
          的console.log($ state.current.url);
      });
  }]);

I'm trying to implement a user auth check and access check system in my app, however I keep hitting roadblocks. I think I have it the correct way this time but I have one last hurdle.

A little background: I tried putting all of the code into the $rootScope.on($startChangeStart) and it worked, horribly... but it worked. The route was always redirected but due to the auth check on the backend it displayed the first request page for 1/2 a second and then the redirect page every time. Thus I tried 'pausing' page load by calling evt.preventDefault() right at the start of the $startChangeStart function, which worked, but trying to put the user back to the original route afterwards caused an infinite loop in the router.

So after more research and reading a lot of stack posts I'm certain that 'resolve:' is the proper place to put the auth check to ensure the page is not loading while it occurs, and then redirect the user if needed from the $startChangeStart. ($state and event are always undefined in my attempts to inject them into a resolve function) It seems like the winning combination.

My problem: I have the resolve on the root state in my app: 'main'

This was to avoid code redundancy, however I cannot determine how to access the root state's properties, and therefore the resolve result, from the $stateChangeStart function. The toState is the child state, while the fromState is either the previous state or an abstract state with the '^' route...

Do I have to put the resolve on every child state for this to work, or is there a way to access the root state from this point?

Basic app setup:

angular.module('App', ['ui.router', 'ui.bootstrap', 'ui.event', 'AngularGM', 'ngResource'])
.config(['$urlRouterProvider', '$stateProvider', function($urlRouterProvider, $stateProvider){
    $urlRouterProvider
        .when('/home', '/')
        .when('', '/')
        .when('/sign-up/joe', '/sign-up')
        .otherwise('/');

    $stateProvider
        .state('main', {
            url: '',
            abstract: true,
            templateUrl: 'views/main.html',
            controller: 'MainCtrl',
            resolve: {
                checkAccess: ['accountService', function(accountService) {
                    accountService.checkAuth(function(){
                        accountService.checkAccess(function (access){
                            return access;
                        });
                    });
                }]
            }
        })
        .state('main.home', {
            url: '',
            abstract: true,
            templateUrl: 'views/home.html',
            controller: 'HomeCtrl'
        })
        .state('main.home.index', {
            url: '/',
            templateUrl: 'views/home/index.html'
        });


.run(['$rootScope', '$state', '$stateParams', 'accountService', function ($rootScope, $state, $stateParams) {
    $rootScope.$state = $state;
    $rootScope.$stateParams = $stateParams;
    $rootScope.$on('$stateChangeStart', function(event, toState, toParams, fromState, fromParams) {
        console.dir(toState);
        console.dir(toParams);
        console.dir(fromState);
        console.dir(fromParams);
        if (!toState.checkAccess.allowed) {
            event.preventDefault();
            $state.transitionTo(toState.checkAccess.newState);
        }
    });
}]);

This is the output from the console.dir() calls on the two state objects:

Object
 name: "main.home.index"
 templateUrl: "views/home/index.html"
 url: "/"
 __proto__: Object

Object
 controller: "PlacesCtrl"
 name: "main.places.search"
 templateUrl: "views/places.html"
 url: "/places"
 __proto__: Object

Update

Oops, forgot to mention AngularJS version is v1.2.0-rc.2

$state.current console.dir()

Object
 abstract: true
 name: ""
 url: "^"
 views: null
 __proto__: Object

解决方案

Yes, I believe you can access root state from the $stateChangeStart function.

When using pure AngularJS I normally use current.$$route

For example, using the following route

.when('/home', {
  title:'Home',
  bodyClass: 'meetings',
  controler: 'HomeCtrl'
})

I can access the root state like so

  $rootScope.$on('$routeChangeSuccess', function (event, current, previous) {

   if (current.$$route) {

     $rootScope.title      = current.$$route.title;

     $rootScope.bodyClass  = current.$$route.bodyClass;
   }

 });

Using ui-router it's just a bit different as it's called $state.current. And you can access all the properties associated to whatever route you hit (e.g: $state.current.url)

So on your code you could have something like this

  .run(['$rootScope', '$state', '$stateParams', function ($rootScope, $state, $stateParams) {

      $rootScope.$on('$stateChangeStart', function(event, toState, toParams, fromState, fromParams) {
          console.log($state.current.url);
      });
  }]);

这篇关于如何访问从$ stateChangeStart一个UI的路由器根状态的“解析”的财产?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!

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