Configuring rack-offline

routes.rb

Kitfox::Application.routes.draw do

  offline = Rails::Offline.configure :cache_interval => 30 do
    cache_buster_timestamp = "20120429"
    files = Dir[
      "#{root}/**/*.html",
      "#{root}/stylesheets/**/*.css",
      "#{root}/javascripts/**/*.js",
      "#{root}/images/**/*.*"]
    files.each do |file|
      file = file + "?" + cache_buster_timestamp
      cache Pathname.new(file).relative_path_from(root)
    end
    network "*"
  end

  match "/application.manifest" => offline
end