Asset pipeline customization

layout.html.haml

= stylesheet_link_tag 'application', :media => 'all'
= stylesheet_link_tag 'app/print', :media => 'print'
-# implement the however you want obviously, just here as an eg.
- unless @theme.nil?
  = stylesheet_link_tag "theme/#{@theme}"
- if controller_specific_styles?
  = stylesheet_link_tag "app/#{params[:controller]}"

production.rb

# config/environments/production.rb

App::Application.configure do
  # normal stuff...

  # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)
  # mjtko - override the default precompile array first, as it picks up
  # more than it should do; see https://github.com/rails/rails/pull/2876
  config.assets.precompile = [ 
                              /\.(?!css|js)\w+$/,
                              /application.(css|js)$/
                             ]
  # also compile everything in app/ and theme/
  config.assets.precompile += [ /^app\//, /^theme\// ]
end