Please find attached pdf file for Coding Standards. Also, refer following git repo for all Ruby idoms: https://github.com/bbatsov/ruby-style-guide Gem you should consider for refactoring and code formatting: rubocop cane rails_best_practices For code complexity use flog gem. Refer post [here][1] for more details. Happy Refactoring :) [1]: http://knowbuddy.kiprosh-app.com/kyu_entries/ruby-code-quality-metrics-and-security