scinote-web/app/views/shared/_navigation.html.erb

<nav class="navbar navbar-default navbar-fixed-top" id="main-nav">
  <div class="container">

    <!-- header -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#main-menu" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="<%= root_path %>">
        <% if Rails.env.production? %>
          <img src="/images/logo.png" id="logo">
        <% else %>
          <img src="/images/logo.png" class="with-version" id="logo">
          <span class="version">
            <%= APP_VERSION %>
          </span>
        <% end %>
      </a>
    </div>

    <% if user_signed_in? %>
    <div class="collapse navbar-collapse" id="main-menu">
      <!-- links -->
      <ul class="nav navbar-nav">
        <li>
          <a href="<%= projects_path %>">
            <span class="glyphicon glyphicon-home"></span>
            <span class="visible-xs-inline"><%= t('nav.label.projects') %></span>
          </a>
        </li>
        <li>
          <a href="<%= protocols_path %>">
            <span class="glyphicon glyphicon-list-alt"></span>
            <span class="visible-xs-inline"><%= t('nav.label.protocols') %></span>
          </a>
        </li>
<% if false  %>
        <li>
          <a href="#">
            <span class="glyphicon glyphicon-calendar"></span>
            <span class="visible-xs-inline"><%= t('nav.label.calendar') %></span>
          </a>
        </li>
<% end %>
        <li>
          <a class="btn-activity" href="<%= activities_path(format: :json) %>" role="button" data-remote="true">
            <span class="glyphicon glyphicon-equalizer"></span>
            <span class="visible-xs-inline"><%= t('nav.label.activities') %></span>
          </a>
        </li>
      </ul>

      <div>
        <!-- profile info -->
        <ul class="nav navbar-nav navbar-right">
          <li class="dropdown">
            <a href="#"
               id="notifications-dropdown"
               class="dropdown-toggle"
               data-toggle="dropdown"
               role="button"
               aria-haspopup="true"
               aria-expanded="false"
               data-href="<%= recent_notifications_url(current_user) %>">
              <%= fa_icon 'bell'%>
              <span id="count-notifications"
                    data-href="<%= unseen_notification_url(current_user) %>"></span>
            </a>
            <ul class="dropdown-menu dropdown-notifications">
              <li class="notifications-dropdown-header"><span><%= t('notifications.title') %></span><span class="pull-right"><%= t('nav.user.settings') %></span></li>
              <li class="notifications-dropdown-footer">link to method goes here</li>
            </ul>
          </li>
          <li class="dropdown">
            <a href="#" id="help-link" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
              <span class="glyphicon glyphicon-info-sign"></span>
            </a>
            <ul class="dropdown-menu">
              <li><%= link_to t('nav.help.tutorials'), TUTORIALS_URL %></li>
              <li><%= link_to t('nav.help.faq'), FAQ_URL %></li>
              <li><%= link_to t('nav.help.support'), SUPPORT_URL %></li>
              <li><%= link_to t('nav.help.plans'), PLANS_URL %></li>
              <li><%= link_to t('nav.help.contact'), CONTACT_URL %></li>
            </ul>
          </li>


          <li class="dropdown">
            <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
              <span><%= t('nav.user_greeting', full_name: current_user.full_name) %></span>
              <%= image_tag avatar_path(current_user, :icon_small), class: "avatar" %>
            </a>
            <ul class="dropdown-menu">
              <li><%= link_to t('nav.user.profile'), edit_user_registration_path %></li>
              <li><%= link_to t('nav.user.settings'), preferences_path %></li>
              <li role="separator" class="divider"></li>
              <li><%= link_to t('nav.user.logout'), destroy_user_session_path, :method => :delete %></li>
            </ul>
          </li>
        </ul>

        <!-- search form -->
        <%= form_tag search_path, method: :get, id: 'search-bar', class: 'navbar-form navbar-right', role: 'search' do %>
          <div class="form-group">
            <div class="input-group">
              <input class="form-control" type="text" name="q" maxlength="50" placeholder="<%= t('nav.search') %>">
              <span class="input-group-btn">
                <button id="search-button" class="btn btn-default" type="submit">
                  <span class="glyphicon glyphicon-search"></span>
                </button>
              </span>
            </div>
          </div>
        <% end %>
      </div>
    </div>
    <% end %>

  </div>
</nav>
<div id="loading-animation"></div>


<%= javascript_include_tag("navigation") %>