lib/assets/partials/_navbar.html.erb
<nav class="navbar navbar-inverse navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<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="<%= resource_prefix %>index.html"><%= title %></a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li>
<a href="<%= host_link %>"><%= host_display_text %></a>
</li>
<li class="dropdown">
<a href="#" data-toggle="dropdown" class="dropdown-toggle"><%= i_category %><b class="caret"></b></a>
<ul class="dropdown-menu">
<!-- <li><a href="#">Inbox</a></li> -->
<% image_collection.each do |category| %>
<li>
<a href="<%= resource_prefix %>assets/<%= category[:tag] %>/index.html"><%= category[:tag] %></a>
</li>
<% end %>
</ul>
</li>
</ul>
</div>
</div>
</nav>