validators by fnando

A gem to define virtual associations on Rails models. Maintained by onyxblade on GitHub, where it has earned 67 stars from the community.

Microscope adds useful scopes targeting ActiveRecord boolean, date and datetime fields. Maintained by mirego on GitHub, where it has earned 61 stars from the community.

Simulate multi-table inheritance for ActiveRecord models. Maintained by chaadow on GitHub, where it has earned 101 stars from the community.