gistfile1.js

.factory('SomeVariableService', ['Restangular', '$q', function SomeVariableService (Restangular, $q){
    return {
        getNewRes: function(someParameter){
            var newResDeferred = $q.defer();
            Restagular.one('someVariable').get({someParameter: someParameter})
            .then(function(result){
                var newRes = result;
                newRes.newlyCreatedProp = 'newlyCreatedProp';
                newResDeferred.resolve(newRes);
            });
            return newResDeferred.promise;
        }
    };
 
}]);