Since this was - rightly - removed from Rails 3

Error Publisher in Haml

module ApplicationHelper
  def error_publisher(model)
    # Thanks Joe!
    return unless model.errors.any?

    item_errors = ''
    model.errors.full_messages.each do |e|
      item_errors += "<li>#{e}</li>"
    end

    content_tag(:div, :id => 'errors') do
      "<p>#{pluralize(model.errors.count, 'error')} prohibited this point from being saved:</p>" +
      "<ul>#{item_errors}</ul>"
    end
=begin
    #And this is how it looks using haml
    capture_haml do
      haml_tag :div, :id => 'errors' do
        haml_tag :p, "#{pluralize(model.errors.count, 'error')} prohibited this point from being saved:"
        haml_tag :ul do
          model.errors.full_messages.each do |msg|
            haml_tag :li, msg
          end
        end
      end
    end
=end
  end
end