GitHub - amoeba-rb/amoeba: A ruby gem to allow the copying of ActiveRecord objects and their associated children, configurable with a DSL on the model - https://github.com/amoeba-rb/amoeba

GitHub - clowne-rb/clowne: A flexible gem for cloning models - https://github.com/clowne-rb/clowne

GitHub - moiristo/deep_cloneable: This gem gives every ActiveRecord::Base object the possibility to do a deep clone that includes user specified associations. - https://github.com/moiristo/deep_cloneable

Active Record

Active Record Migration

GitHub - teoljungberg/fx: Versioned database functions and triggers for Rails - https://github.com/teoljungberg/fx

GitHub - jenseng/hair_trigger: Happy database triggers for ActiveRecord - https://github.com/jenseng/hair_trigger

GitHub - scenic-views/scenic: Versioned database views for Rails - https://github.com/scenic-views/scenic