184-formtastic-part-1 is a project mainly written in RUBY and JAVASCRIPT, it's free.
Railscasts Episode #184: Formtastic Part 1
http://railscasts.com/episodes/184
Commands
rails vet sudo rake gems:install script/generate nifty_layout script/generate nifty_scaffold category name:string description:text rake db:migrate script/generate formtastic_stylesheets script/generate nifty_scaffold animal name:string category_id:integer born_on:date female:boolean