Flash Messages Helper

flash_message_helper.rb

# http://rubypond.com/blog/useful-flash-messages-in-rails

FLASH_NOTICE_KEYS = [:error, :notice, :warning]

def flash_messages
  return unless messages = flash.keys.select{|k| FLASH_NOTICE_KEYS.include?(k)}
  formatted_messages = messages.map do |type|      
    content_tag :div, :class => type.to_s do
      message_for_item(flash[type], flash["#{type}_item".to_sym])
    end
  end
  formatted_messages.join
end

def message_for_item(message, item = nil)
  if item.is_a?(Array)
    message % link_to(*item)
  else
    message % item
  end
end