Whoa. Guess what I found?
An old Ruby-on-Rails plugin I put up on RubyForge way back in 2007, that, get this—added the ability to declare constraints during ActiveRecord migrations.
Migrations Constraints is a Rails plugin that allows creation and management of database constraints such as uniqueness and referential integrity (foreign keys) using ActiveRecord Migrations.
http://rubyforge.org/projects/mig-constraints/
The neat thing is that, except for foreign keys, it actually provided the same syntax that ActiveRecord migrations currently uses!
Not saying that my project influenced ActiveRecord, but it’s pleasing to know how my design fell in-line with Rails core. 🙂
This just inspires me to publish more of my Ruby/Rails reusable code as Ruby gems or Railties or Rails Plugins/Engines.
Alistair Israel 