Turn request success into error based on response data - angularjs

Question

I am relatively new to Angular js and trying to use promises along with services and got reference http://plnkr.co/edit/b4HPbX2olM745EfHVcc6?p=preview. But in my application I am getting response as {"Response":"exception while loading Reports List","error":"Exception getting all records.","status":"failure"}. When I get response like this, I need to show an alert message with the message in "error" (i.e., Exception getting all records) and set $scope.data to [] in my controller.What are the changes I need to make to services and controller to handle this. Any help is much appreciated.
In services :
return $q.when(originalRequest)
.then(function(res) {
data = res.ResultSet.Response;
return data;
});
In Controller,
DashboardsDataService.getNetSpendOverTimeData()
.then(function(data) {
$scope.data = data;
});
The following is my original request to Java action class:
var originalRequest = $.ajax({
async : false,
url : "/dash2/dashd2ajax.do",
type : "POST",
data : {
action : 'getNetSpendOverTime',
customerId : selectedAccTd,
carriersId : selectedCarriers,
fromDate : fromDate,
toDate : toDate,
modes : selectedModes,
services : selectedServices,
dateType : selectedDateType,
lanesList : selectedLaneList
},
dataType : "json"
});
return $q.when(originalRequest)
.then(function(res) {
data = res.ResultSet.Response;
return data;
});

Answer 1

If what you're asking is "how do I turn request success into a failure based on result data", then take a look at the following example:
return $q.when(originalRequest).then(function (res) {
if (res.ResultSet.error) {
return $q.reject(res.ResultSet.error);
} else {
return res.ResultSet.Response;
}
});
Using $q.reject() turned your data into a real "promise failure", so in your controller, you can use the normal promise API:
doSomethingAsynchronous().then(function (data) {
$scope.data = data;
}, function (error) {
$scope.data = [];
alert(error);
});