app/views/shared/_manage_menu.html.erb
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false"><%= t('manage_menu.manage') %></a>
<div class="dropdown-menu">
<%= link_to t('manage_menu.admin'), admin_path, class: 'dropdown-item' %>
<%= link_to t('manage_menu.reports'), admin_reports_path, class: 'dropdown-item' %>
</div>
</li>