example_template.rb

initializer "time_formats.rb",
%q{def quarter(month)
  (((month - 1) / 3) + 1) if (1..12).member? month 
end

ActiveSupport::CoreExtensions::Time::Conversions::DATE_FORMATS[:quarter] = lambda { |time| time.strftime("Q#{quarter(time.month)}-%y") }
}