Ruby on Rails - Can I modify data before it is saved?

Question

Quick example: A user enters a username into a form, and I need to make that text username before storing it in the app's database, thereby making it permanently lowercase.

Where would I put this code, and how would I access the data to be lowercased?

Thanks.

Answer 1

you should overwrite the attribute writer:

class User < ActiveRecord::Base   def username=(val)     write_attribute(:username, val.downcase)   end end