app/views/admin/notices/_notice_template.html.erb
<%= content_tag :script, class: 'template-notice-item', type: 'text/template' do %>
<tbody class="item">
<tr>
<td class="id"><input name="id[]" type="hidden" value=""></td>
<td class="dateline"><input name="dateline[]" type="text" value="<%= Time.now.strftime('%F') %>"></td>
<td class="subject"><input name="subject[]" type="text" value=""></td>
<td><a class="cross js-button-delete" data-parent-level="3"></a></td>
</tr>
<tr><td colspan="4"><textarea name="message[]" class="hidden" placeholder="<%= t('form.content') %>"></textarea></td></tr>
</tbody>
<% end %>