snake-case

resolvers/load.py

@@ -104,8 +104,8 @@ async def load_messages_by(_, info, by, limit: int = 10, offset: int = 0):
             messages = await load_messages(by_chat, limit, offset)
         return {
             "messages": sorted(
-                [m for m in messages if m.get("createdAt")],
-                key=lambda m: m.get("createdAt"),
+                [m for m in messages if m.get("created_at")],
+                key=lambda m: m.get("created_at"),
             ),
             "error": None,
         }