dynamic select setup

gistfile1.sh

# create new rails app
rails new dynamic_select_boxes -m https://raw.github.com/RailsApps/rails3-application-templates/master/rails3-haml-html5-template.rb

# create models:
rails g model genre name:string
rails g model artist name:string genre_id:integer
rails g model song title:string artist_id:integer

rake db:migrate