<def tag='error-messages'>
  <section class='error-messages' merge-attrs if='&this.errors.size > 0'>
    <h2 param='heading'>
      <t model='&this.class.model_name.human' count='&this.errors.size' key='activerecord.errors.template.header'>
        <%= model = this.class.model_name.human
            count = this.errors.size
        count==1 ? "1 error prohibited this #{model} from being saved" :
                   "#{count} errors prohibited this #{model} from being saved"
        %>
      </t>
    </h2>
    <t key='activerecord.errors.template.body'>There were problems with the following fields:</t>
    <ul param>
      <% this.errors.to_a.each do |message| -%>
      <li param><%= message %></li>
      <% end -%>
    </ul>
  </section>
</def>