trustieforge/app/views/admin/_tab_users.erb

<div class="tabs">
  <ul>
    <li><%= link_to '用户', {:action => 'latest_login_users'},   class: "#{current_page?(latest_login_users_path)? 'selected' : nil }" %></li>
    <li><%= link_to '老师',  {:action => 'latest_login_teachers'},  class: "#{current_page?(latest_login_teachers_path)? 'selected' : nil }" %></li>

  </ul>
</div>