if語句來檢查http請求的狀態AngularJS

Question

嗨，我試圖得到一個http請求的狀態並有條件地設置一個變量。我正在做一個subcall來檢查user1是否跟隨user2。我的代碼看起來像這樣。 （爲簡便起見我剪的是通過我以前得到要求我之所以要推的用戶的列表需要循環在foreach功能）

$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);   
     }); 

    }; 

---

試過這種沒有工作

$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);   
     }); 

    }; 

這是我的服務！

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

注 - 開始和結束都將被忽略，如果to_id不是-1

Answer 1

$http返回狀態碼作爲第二個參數。

$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，如果狀態是錯誤狀態，例如404，則將調用error塊。