从控制器中的服务调用函数 angular ng-hide

Calling function from service in controller angular ng-hide

我有一个带有登录按钮的布局页面,我只想在未登录时显示它。我想通过使用服务来实现:

app.service('AuthService', function ($http) {
        this.getUserStatus = function () {
            return $http({
                url: '/auth/status',
                method: "GET"
            });
        };
});

然后我在控制器中这样调用它:

app.controller('MenuController', [
  '$scope',
  '$http',

function ($scope, AuthService) {

    $scope.authorize = function() {
      AuthService.getUserStatus();
    }
  }
]);

最后我在布局中使用 ng-controller 和 ng-hide 来显示或隐藏注销按钮:

<body ng-app="headcountApp">
<nav ng-controller="MenuController">
  <ul>
    <li ng-hide="authorize">
      <a href="#/">Login</a>
    </li>
    <li>
        <a href="#/employee/add">Add</a>
    </li>
    <li>
        <a href="#/employees">employees</a>
    </li>
    <li>
        <a href="#/edit">Edit</a>
    </li>
    <li>
        <a href="#/delete">Delete</a>
    </li>
    <li>
        <a href="/logout">logout</a>
    </li>
  </ul>
</nav>

我的问题是它总是隐藏的,告诉我这个值总是真的。我该如何解决这个问题?

这解决了问题:

app.controller('MenuController', [
'$scope',
'$http',
'AuthService',

function ($scope, $http, AuthService) {

$scope.authorized = false;
  AuthService.getUserStatus().then(function(res){
    $scope.authorized = res.data;
   });
  }
]);

AuthService.getUserStatus(); return $http(). the result of $http() call is a promise 的结果。您需要使用 promise 注册一个解析回调以获取 http 请求的结果:

$scope.authorized = false;
$scope.authorize = function() {
    AuthService.getUserStatus().then(function(res){
         // If result from server indicate login state set $scope.authorized = true
    });
}

并且在您看来绑定到 $scope.authorize:

<li ng-hide="authorized">
  <a href="#/">Login</a>
</li>