gistfile1.rb

# t(:foo) now looks for admin.blog_controller.foo, then if not found it then goes for admin.foo, then finally just foo.
def ApplicationController.has_controler_specific_translation_helper_fu
  def t(key, options = {})
    controller_name = self.controller_name + "_controller"
    defaults = [[:admin, controller_name, key], [:admin, key], [key]].map{|a| a.join(".").to_sym}
    key, defaults = *defaults
    options[:default] = defaults
    I18n.t(key, options)
  end
  helper_method :t
end