Rails 2.1 - turing off time stamped migrations

I have read that you could turn of time stamped migrations by adding
the line “config.active_record.timestamped_migrations = false” to your
environment.rb. After I add this line I get the following error when
running “script/generate model Post”:

base.rb:1667:in method_missing': undefined methodtimestamped_migrations=’ for ActiveRecord::Base:Class (NoMethodError)

Am I mistaken about this feature?

If I’m not mistaken about this feature has anyone else run into this?
(I’d like to confirm before taking the next step.)


I found it detailed in this ticket
and here
but I guess it didn’t make it in to 2.1.