Segue uma listinha de posts que achei interessante sobre Rails
- Associações polimórficas: http://railscasts.com/episodes/154-polymorphic-association?view=comments
- Duas formas de criar associações many-to-many (HABTM ou :has_many): http://railscasts.com/episodes/47-two-many-to-many
- Usando checkboxes na view para associações :has_many http://millarian.com/programming/ruby-on-rails/quick-tip-has_many-through-checkboxes/
- Sunspot SOLR na sua app Rails: http://collectiveidea.com/blog/archives/2011/03/08/full-text-searching-with-solr-and-sunspot/
- Adicionando o sunspot à sua app: https://github.com/outoftime/sunspot/wiki/Adding-Sunspot-search-to-Rails-in-5-minutes-or-less
- CoffeeScript no Rails3 http://www.rubyinside.com/how-to-rails-3-1-coffeescript-howto-4695.html
