AngularJS 仅在浏览器的后退按钮上重定向路由 [英] AngularJS redirect a route only on browser's back button

问题描述

在我的 AngularJS 应用程序中，当用户未登录时，我将 route 重定向到特定页面.为此，我在 $rootScope 上使用了一个变量.

In my AngularJS application I'm redirecting the route to a specific page when the user isn't logged. To do that I'm using a variable on $rootScope.

现在我想在用户登录时阻止浏览器的后退按钮.我想将其重定向到特定页面(registration 视图).问题是我不知道是否有后退按钮事件.

Now I would like to prevent the browser's back button when the user is logged. I would like to redirect it to a specific page (the registration view). The problem is I don't know if there's a back button event.

我的代码是:

 angular.module('myApp',[...]
//Route configurations
}])
.run(function($rootScope, $location){
               $rootScope.$on('$routeChangeStart', function(event, next, current){
                   if(!$rootScope.loggedUser) { 
                       $location.path('/register');
                   }
               });
               $rootScope.$on('$locationChangeStart', function(event, next, current){
                   console.log("Current: " + current);
                   console.log("Next: " + next);
               });
           });

所以在 $locationChangeStart 上我会写一个伪代码，如:

So on $locationChangeStart I would write a pseudocode like:

if (event == backButton){
     $location.path('/register');
}

有可能吗?

一个简单的解决方案是编写一个函数来检查 next 和 current 的顺序是否错误，检测用户是否返回.

A naive solution would be writing a function that checks if next and current are in the wrong order, detecting if the user is going back.

还有其他解决方案吗?我以错误的方式解决问题?

There are other solutions? I'm approaching the problem in a wrong way?

推荐答案

我找到了一个解决方案，它比我想象的要容易.我在 $rootScope 中的一个对象上注册了实际位置，并在每个位置更改时使用新的位置进行检查.通过这种方式，我可以检测用户是否在历史记录中返回.

I found a solution, which is easier than I thought. I register on a object in $rootScope the actual location and on every location change I check with the new one. In this way I can detect if the user is going back in the history.

angular.module('myApp',[...], {
    //Route configurations
}])
.run(function($rootScope, $location) {
    $rootScope.$on('$routeChangeStart', function(event, next, current) {
        if(!$rootScope.loggedUser) { 
            $location.path('/register');
        }
    });

    $rootScope.$on('$locationChangeSuccess', function() {
        $rootScope.actualLocation = $location.path();
    });

    $rootScope.$watch(function() { return $location.path() },
        function(newLocation, oldLocation) {
            if($rootScope.actualLocation == newLocation) {
                $location.path('/register');
            }
        }); 
    });
});

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