javascript - if 语句检查 get 请求 AngularJS 的 http 状态

Question

您好，我正在尝试获取 http 请求的状态并有条件地设置一个变量。我正在进行子调用以检查 user1 是否在关注 user2。我的代码看起来像这样。 (为简洁起见，我删除了需要循环遍历用户列表的 foreach 函数，我之前收到请求的原因是我必须推送)

$scope.users = [];
  var getUser = function(id) {
        UserService.GetUserById(id, $localStorage.CurrentUser.auth_token)
        .success(function (data) {

         data = angular.fromJson(data);

//data model ==> {id: 0, username: "foo"}

//check if 404 or 200 ==> UserService.GetUserFollowers($stateParams.id, data.id)
//if 200 data.is_following = 1; if 404 data.is_following = 0

         $scope.users.push(data);  

//data model after pushed ==> {id: 0, username: "foo", is_following: 1}

         console.log(angular.toJson($scope.users));

        }).error(function(error, status) {
            alert(status);
            console.log(error);         
        });

    };

---

试过了没用

$scope.users = [];
  var getUser = function(id) {
        UserService.GetUserById(id, $localStorage.CurrentUser.auth_token)
        .success(function (data) {

         $scope.data = angular.fromJson(data);

         UserService.GetUserFollowers($stateParams.id, $scope.data.id, -1, -1)
            .success(function(data, status) {                      
              $scope.status = status;
            }).error(function(data, status) {               
              $scope.status = status;
            });

       if ($scope.status === 200) {
          $scope.data.is_following = true;
       }else{
          $scope.data.is_following = false;
       }

        $scope.users.push($scope.data);

         console.log(angular.toJson($scope.users));

        }).error(function(error, status) {
            alert(status);
            console.log(error);         
        });

    };

这是我的服务:

  this.GetUserFollowers = function (my_id, to_id, begin, end) {
            return $http.get($rootScope.endPoint + '/user/' + my_id + '/followers/' + to_id + '/' + begin + '/' + end + '/');    
        };

!注意 - 如果 to_id 不是 -1，begin 和 End 将被忽略

Answer 1

$http 返回状态代码作为第二个参数。

$http.get(url)
  .success(function(data, status) {
      alert(status); // HTTP status code of the response
  })
  .error(function(data, status) {
      alert('Error with status code: ' + status); 
  });

但是，如果状态是错误状态，例如 404，则将调用 error block 。