Do's and Don'ts in ROR

hey everyone i wanna know Do's and Don'ts in ROR. if there are any
such thing in ROR can anyone tell me .

Thanks in advance

Follows rails best practices, coding standards and conventions.
Below link will give you standards defined by me in 2009… hopefully i will write modified version soon…
http://www.funonrails.com/2009/05/rails-coding-standards.html

http://rails-bestpractices.com/