module Erubis::Helpers::RailsFormHelper

def pp_radio_button(object_name, method, tag_value, options={})
  s = radio_button(object_name, method, tag_value, options)
  s.sub!(/\schecked=\"checked\"/, '')
  s.sub!(/type="radio"/, "\\&<%= _pp_radio_button_checked?(@#{object_name}.#{method}, #{tag_value.inspect}) ? ' checked=\"checked\"' : '' %>")
  return pp_error_on(object_name, method) { _pp_remove_error_div(s) }
end