app/views/layouts/wiki.html.erb

<!DOCTYPE html>
<html>
<head>
  <title>Rails Wiki</title>
  <%= stylesheet_link_tag    "wiki/application", media: "all" %>
  <%= javascript_include_tag "wiki/application" %>
  <%= csrf_meta_tags %>
  <%= auto_discovery_link_tag :rss {controller: 'pages', action: 'log'} %>
</head>
<body>

	<nav>
		<ul class="tops">
			<% Rails.configuration.wiki.top_pages.each do |v| %>
				<li><%= link_to v.name, v %></li>
			<% end %>
		</ul>
		<ul class="find">
			<li><%= link_to 'changelog', log_path %></li>
			<li><%= link_to 'contents', pages_path %></li>
			<li>
				<%= render partial: 'wiki/search' %>
			</li>
		</ul>
	</nav>

	<% if content_for?(:page_parents) %>
		<%= yield :page_parents %>
	<% end %>

  <% if content_for?(:page_title) %>
    <%= yield :page_title %>
  <% end %>

	<%= yield %>

	<div class="metadata">
	<% if content_for?(:page_meta) %>
		<%= yield :page_meta %>
	<% end %>
	<% if content_for?(:page_actions) %>
		<%= yield :page_actions %>
	<% end %>
	</div>

	<% if content_for?(:page_related) %>
		<%= yield :page_related %>
	<% end %>

</body>
</html>