I was going to blog about this, but thought it might be better to link to a wiki, which will be easier to update depending on when changes are made, or errors that are discovered.
So here is how you can use CouchDB with Ruby On Rails:
ActiveCouch Wiki Page describing how you can use ActiveCouch with Ruby On Rails
The author of this blog is a Ruby Developer based in Singapore. Co-Founder of Gameplan, dabbles in Ruby, CouchDB and anything new and shiny (shininess is mandatory).
Loves Mac OS X and the iPhone.
Supports Manchester United and is a fan of Mohanlal, Quentin Tarantino, The Coen Brothers and Seth Rogen.
Mostly listens to Indian music, but loves The Beatles, The Doors, Guns n' Roses and Dire Straits.
The author's pseudonym 'McLovin' is inspired from the 2007 classic Superbad.
I also post occasionally on my Posterous.