Rails pretty flash messages with Twitter Bootstrap

gistfile1.rb

# See http://twitter.github.com/bootstrap/components.html#alerts
#
# USAGE:
#   flash.now[:info] = { title: 'New flash messages! ', body: 'Just add :info, :success, :warning or :error.' }
#   redirect_to root_path, warning: 'You should use :success and :error instead of :notice and :alert'
#
# in application_controller.rb

def pretty_flash(name, msg)
  msg_content = if msg.is_a?(String)
                  msg
                elsif msg.is_a?(Hash)
                  content_tag(:strong) { msg[:title] } + msg[:body]
                else
                  nil
                end

  # HACK: override devise :notice and :alert messages
  name = 'success' if name.to_sym == :notice
  name = 'error'   if name.to_sym == :alert

  if msg_content
    content_tag(:div, class: "alert alert-#{name}") do
      content_tag(:button, type: 'button', class: 'close', data: { dismiss: 'alert' } ) { '×'.html_safe } +
      msg_content
    end
  end
end