Fixed sorting with null values #130

kdb-bot/src/bot_graphql/filter/sort.py

@@ -3,8 +3,6 @@ import functools
 from cpl_core.utils import String
 from cpl_query.extension import List
 
-from bot_api.exception.service_error_code_enum import ServiceErrorCode
-from bot_api.exception.service_exception import ServiceException
 from bot_graphql.abc.filter_abc import FilterABC
 
 
@@ -32,9 +30,7 @@ class Sort(FilterABC):
     def _by_column(self, x):
         atr = self._rgetattr(x, String.convert_to_snake_case(self._sort_column), None)
         if atr is None:
-            raise ServiceException(
-                ServiceErrorCode.InvalidData, f"Attribute {self._sort_column} in object of {type(x)} not found"
-            )
+            return ""
         return atr
 
     def filter(self, query: List, *args) -> List: