foreign key associations: best practices?

Looks like http://www.redhillonrails.org has been taken over by ads and considering how old the RedHill plugins are getting I was wondering if people are still using the RedHill foreign_key_migrations plugin to setup foreign key relationships? If not what are people using to replace it?

Thanks, Aaron

I'm using foreigner. It works great for me. Foreign keys get correctly put into schema.db and everything.

http://github.com/matthuhiggins/foreigner