在Angular.js中承诺

Question

I have changed the env property of my url to test my code locally.. It seems the error call back is not even getting called. My code snippet-

        $scope.getfiles = function() {
        Api.file.query().$promise.then(
        function(result){ $scope.getfiles = result; },  //on success
        $scope.commonAjaxErrorHandling("Failed to get  File data.",true)  //on failure--> Always this line of  code is executing..
           );
         };

If I try writing other error function. It is not even getting called.

        $scope.getfiles = function(){
        Api.flatFile.query().$promise.then(
         function(result){ $scope.File = result; 
  },
      function (result) { // this block is not getting called
         if(result.status== 404){
         $scope.addErrorAlert("Service is down.Please try again later",true);
         return;
     }
 });
};

Can someone help me out this situation?

        FileServices.factory('Api', ['$res', '$loc',
        function($res, $loc){
        var contextPath = $loc.absUrl().split('/app/')[0];
        return {
        flatFile: $res(contextPath+'/app/config/flatFile/data', {}, {
        query: {method:'GET', isArray:true},
        save: {method:'POST'},
        })
        };
       }]);

Answer 1

The function probably doesn't get called in either way. The problem here is that in the first case you do not define a function as a callback but immediately call the function itself

$scope.commonAjaxErrorHandling("Failed to get  File data.",true)

this is not a callback-definition but the immediate call of $scope.commonAjaxErrorHandling

So my idea is that no error occurs and thats why in the second case the error-function isn't called either

Answer 2

It seems like you are checking for the status incorrectly. You should be accessing the second parameter of the fail callback:

  // ...
  ,
  function (jqXHR, textStatus, error) { 
     if(textStatus == 404){
        $scope.addErrorAlert("Service is down.Please try again later",true);
        return;
   }
 }

Note: There is no file key in the object that you're returning from Api service, and therefore it should be flatFile instead.