如何在ui路由器解析器中重定向? [英] How to redirect in a ui-router resolver?

问题描述

我正在尝试在ui路由器解析器中重定向，并想知道是否有一种方法可以在路由器解析器中进行重新路由.目前，这并不像人们想象的那样.

I am trying to redirect inside a ui-router resolve and wanted to know if there is a way to reroute in a router resolver. Currently this does not work as one would think.

resolver(auth, $state){
   if(!auth.isLoggedIn()){
       $state.go('noLoggedInPath');
   }
}

一个解析器如何正确重定向?

我的临时破解是这个，但我对此不太满意.

My temp hack is this but I am not comfortable with it.

resolver(auth, $state, $timeout){
   if(!auth.isLoggedIn()){
        $timeout(function () {

             $state.go('noLoggedInPath');
        }, 0);
   }
}

推荐答案

您可以从resolver函数返回一个Promise，该Prom指示是否继续导航到该状态.如果您决定导航到其他地方-拒绝诺言并指定正确的状态:

You can return a promise from your resolver function that will indicate whether to continue navigating to the state or not. If you decide to navigate somewhere else - reject the promise and specify the proper state:

resolver($q, $state, $timeout, auth) {
    var deferred = $q.defer();

    // $timeout is an example; it also can be an xhr request or any other async function
    $timeout(function() {
      if (!auth.isLoggedIn()) {
        // user is not logged, do not proceed
        // instead, go to a different page
        $state.go('noLoggedInPath');
        deferred.reject();
      } else {
        // everything is fine, proceed
        deferred.resolve();
      }
    });

    return deferred.promise;
}

Plunkr 此处.

UPD:更新了代码并添加了plunkr.看起来只有将它放在超时函数中，它才起作用.

UPD: updated code and added plunkr. Looks like it only works if you put it inside a timeout function.

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