+ def optgroups(self, name, value, attrs=None):
+ """ Add synthetic option for keeping the current value. """
+ return [(None, [
+ self.create_option(
+ name,
+ v,
+ '(bez zmian)',
+ selected=True,
+ index=index,
+ attrs=attrs,
+ )
+ for index, v in enumerate(value)
+ ], 0)]
+