_form.rhtml

<%= error_messages_for 'version' %>

<div class="box">
<!--[form:version]-->
<p><%= f.text_field :name, :size => 20, :required => true %></p>
<p><%= f.text_field :description, :size => 60 %></p>
<p><%= f.text_field :effective_date, :size => 10, :required => true %><%= calendar_for('version_effective_date') %></p>
<!--[eoform:version]-->
</div>