looking here solved my problem.

http://gregmoreno.ca/rails-3-upgrade-part-4-prototype-helpers-and-javascript/

I think observe_field is a good method to be included. Can't
understand why it's not there.
Thank you all!

On Jan 9, 3:18 pm, Ahmy Yulrizka wrote:
looking athttp://apidock.com/rails/v2.3.8/ActionView/Helpers/PrototypeHelper/ob...

i thinkt that method is opt out on 2.3.8

maybehttp://railscasts.com/episodes/88-dynamic-select-menus

there is a revised version, but it's for subscriber only

Ahmy Yulrizka

On Mon, Jan 9, 2012 at 5:02 PM, venkata reddy wrote:






observe_field
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