gistfile1.ru

def error_messages_for(object)
  object = instance_variable_get("@#{object}")
  return if object.errors.empty?

  result = "<div id=\"errorExplanation\"><h2>The following errors prohibited this form from being saved:</h2><ul>"
  object.errors.full_messages.each { |msg| result << "<li>#{msg}</li>" }
  result << "</ul></div>"
  result.html_safe
end