[Error] responds_to_parent not respond rjs action

Hi,
(first of all, I have English as second language. I'm sorry for any
mistake.)

So, I'm getting used to RoR but there are quite things that I can't
do.

I'm having a problem whit responds_to_parent. All the action works ok,
data goes to the db, but the screen don't change.

Codes:

controller
/