activerecord-cti

https://github.com/khata-jp/activerecord-cti

ActiveRecord-Cti is a library implemented Class Table Inheritance on Ruby on Rails. Class Table Inheritance (CTI) is useful under the circumstances that an ActiveRecord object is in multiple positions or has multiple roles, and you want to describe it's structure on the database. For Example, one person may be a player and a coach in a soccer team.