Using bundled Jammit to precache assets in deploy.rb

deploy.rb

namespace :deploy do
  desc 'Bundle and minify the JS and CSS files'
  task :precache_assets, :roles => :app do
    root_path    = File.expand_path(File.dirname(__FILE__) + '/..')
    jammit_path  = Dir["#{root_path}/vendor/gems/jammit-*/bin/jammit"].first
    yui_lib_path = Dir["#{root_path}/vendor/gems/yui-compressor-*/lib"].first
    assets_path  = "#{root_path}/public/assets"

    # Precaching assets
    run_locally "ruby -I#{yui_lib_path} #{jammit_path}"
    # Uploading prechached assets
    top.upload assets_path, "#{current_release}/public", :via => :scp, :recursive => true
  end
end