code: def _get_formatted_val(self, obj, name, column):
          
          attr_path = name.split('.')
          val = None
          tmp_val = obj
          for attr in attr_path:
              tmp_val = getattr(tmp_val, attr, None)
              if tmp_val is None:
                  break
          if tmp_val is not None:
              val = tmp_val
  
          return format_value(column, val, self.config_key)
docs: Format the value of the attribute 'name' from the given object