sync request increment support enhancement

apps/hadis/views/hadis.py

@@ -202,7 +202,8 @@ class HadisSyncView(ListAPIView):
         )
         
         # Incremental sync support to prevent transferring 25MB on subsequent syncs
-        updated_after = self.request.query_params.get('updated_after') or self.request.query_params.get('since')
+        req = getattr(self, 'request', None)
+        updated_after = (req.query_params.get('updated_after') or req.query_params.get('since')) if req and hasattr(req, 'query_params') else None
         if updated_after:
             from django.utils.dateparse import parse_datetime
             try: