jammit_helper.rb

# include bundled assets if not in development
# this allows us to deploy without installing jammit
module JammitHelper
  def include_stylesheets(*packages)
    return super if Rails.env.development? || Rails.env == 'test'
    options = packages.extract_options!

    files = asset_tags(:css, packages)
    files.push(options) unless options.empty?

    stylesheet_link_tag(*files)
  end

  def include_javascripts(*packages)
    return super if Rails.env.development?
    javascript_include_tag(asset_tags(:js, packages))
  end

  def asset_tags(ext, packages)
    packages.map do |package|
      source = "assets/#{package}.#{ext}"
      path = Rails.root.join("public", source).to_s
      mtime = File.mtime(path).to_i.to_s

      "/#{source}?#{mtime}"
    end
  end
end