pg_ltree by sjke

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.

Some ActiveModel/ActiveRecord validators. Maintained by fnando on GitHub, where it has earned 97 stars from the community.