app/views/layouts/godmin/application.html.erb
<% content_for :body do %>
<nav class="navbar navbar-default navbar-static-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#godmin-navbar-collapse" 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>
<%= link_to t("godmin.title"), root_path, class: "navbar-brand" %>
</div>
<div class="collapse navbar-collapse" id="godmin-navbar-collapse">
<ul class="nav navbar-nav">
<%= render partial: File.join(engine_wrapper.namespaced_path, "shared/navigation") %>
</ul>
<ul class="nav navbar-nav navbar-right">
<%= render partial: File.join(engine_wrapper.namespaced_path, "shared/navigation_aside") %>
</ul>
</div>
</div>
</nav>
<div class="container">
<%= render "layouts/godmin/content" %>
</div>
<% end %>
<%= render "layouts/godmin/layout" %>