Fix chat last message body

chat_box/models.py

@@ -27,7 +27,7 @@ class Room(models.Model):
 
     @cache_wrapper(prefix="Rinfo")
     def _info(self):
-        last_msg = self.message_set.first()
+        last_msg = self.message_set.filter(hidden=False).first()
         return {
             "user_ids": [self.user_one.id, self.user_two.id],
             "last_message": last_msg.body if last_msg else None,