How to check if an attribute has changed?

Rails
1

I have read about dirty object but I’m not sure if they are still
present or recommended in Rails.

2

Juan K. wrote:

I have read about dirty object but I’m not sure if they are still
present or recommended in Rails.

http://api.rubyonrails.org/classes/ActiveRecord/Dirty.html

I use these quite a bit.

– greg willits