module Edifice
  module Forms
    module Helper
      # not sure why there isn't something like this in rails
      #
      # render the errors on an object in a fairly standard way:
      #
      # <ul class="errors">
      #   <li data-for="name">Name cannot be blank</li>
      # </ul>
      def render_errors(builder)
        errors = builder.object.errors
        messages = errors.full_messages
        content_tag :ul, :class => :errors do
          output = ''
          errors.each_with_index do |error, i|
            output << content_tag(:li, :'data-for' => "#{builder.object_name}_#{error[0]}") { messages[i] }
          end
          output.html_safe
        end
      end
    end
  end
end