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i think self.method just like class method,so if i want to define it as a private method,i should use private_class_method :my_method but i found follow code in < <Agile Web Development with Rails>> private def self.hash_password(password) Digest::SHA1.hexdigest(password) end just a mistake or there have some thing which i cannot get?

Hi all, experienced programmer but complete RoR newbie here, this is my first rails post/question so bear with me. I have a working RoR app on 1.2.4 and PostgreSQL, and my first efforts at running it in 2.0.2 show it does not cleanly upgrade without changes. Can anyone give me some hints/pointers as to what I''ll need to change for 2.0.2 and how do I identify it other than trial and