terraform/website/source/layouts/docs.erb

<% wrap_layout :inner do %>
	<% content_for :sidebar do %>
		<div class="docs-sidebar hidden-print affix-top" role="complementary">
			<ul class="nav docs-sidenav">
				<li<%= sidebar_current("docs-home") %>>
				<a href="/docs/index.html">Documentation Home</a>
                </li>

				<li<%= sidebar_current("docs-config") %>>
				<a href="/docs/configuration/index.html">Configuration</a>
				<ul class="nav">
					<li<%= sidebar_current("docs-config-load") %>>
					<a href="/docs/configuration/load.html">Load Order and Semantics</a>
					</li>

					<li<%= sidebar_current("docs-config-syntax") %>>
					<a href="/docs/configuration/syntax.html">Configuration Syntax</a>
					</li>

					<li<%= sidebar_current("docs-config-interpolation") %>>
					<a href="/docs/configuration/interpolation.html">Interpolation Syntax</a>
					</li>

					<li<%= sidebar_current("docs-config-override") %>>
					<a href="/docs/configuration/override.html">Overrides</a>
					</li>

					<li<%= sidebar_current("docs-config-resources") %>>
					<a href="/docs/configuration/resources.html">Resources</a>
					</li>

					<li<%= sidebar_current("docs-config-providers") %>>
					<a href="/docs/configuration/providers.html">Providers</a>
					</li>

					<li<%= sidebar_current("docs-config-variables") %>>
					<a href="/docs/configuration/variables.html">Variables</a>
					</li>

					<li<%= sidebar_current("docs-config-outputs") %>>
					<a href="/docs/configuration/outputs.html">Outputs</a>
					</li>

				</ul>
				</li>

				<li<%= sidebar_current("docs-commands") %>>
				<a href="/docs/commands/index.html">Commands (CLI)</a>
				<ul class="nav">
					<li<%= sidebar_current("docs-commands-apply") %>>
					<a href="/docs/commands/apply.html">apply</a>
					</li>

					<li<%= sidebar_current("docs-commands-graph") %>>
					<a href="/docs/commands/graph.html">graph</a>
					</li>

					<li<%= sidebar_current("docs-commands-output") %>>
					<a href="/docs/commands/output.html">output</a>
					</li>

					<li<%= sidebar_current("docs-commands-plan") %>>
					<a href="/docs/commands/plan.html">plan</a>
					</li>

					<li<%= sidebar_current("docs-commands-refresh") %>>
					<a href="/docs/commands/refresh.html">refresh</a>
					</li>

					<li<%= sidebar_current("docs-commands-show") %>>
					<a href="/docs/commands/show.html">show</a>
					</li>
				</ul>
				</li>

				<li<%= sidebar_current("docs-providers") %>>
				<a href="/docs/providers/index.html">Providers</a>
				<ul class="nav">
					<li<%= sidebar_current("docs-providers-aws") %>>
					<a href="/docs/providers/aws/index.html">AWS</a>
					</li>

					<li<%= sidebar_current("docs-providers-cloudflare") %>>
					<a href="/docs/providers/cloudflare/index.html">CloudFlare</a>
					</li>

					<li<%= sidebar_current("docs-providers-do") %>>
					<a href="/docs/providers/do/index.html">DigitalOcean</a>
                    </li>

					<li<%= sidebar_current("docs-providers-dnsimple") %>>
					<a href="/docs/providers/dnsimple/index.html">DNSimple</a>
					</li>

					<li<%= sidebar_current("docs-providers-heroku") %>>
					<a href="/docs/providers/heroku/index.html">Heroku</a>
					</li>
				</ul>
				</li>

				<li<%= sidebar_current("docs-provisioners") %>>
				<a href="/docs/provisioners/index.html">Provisioners</a>
				<ul class="nav">
					<li<%= sidebar_current("docs-provisioners-connection") %>>
					<a href="/docs/provisioners/connection.html">connection</a>
					</li>

					<li<%= sidebar_current("docs-provisioners-file") %>>
					<a href="/docs/provisioners/file.html">file</a>
					</li>

					<li<%= sidebar_current("docs-provisioners-local") %>>
					<a href="/docs/provisioners/local-exec.html">local-exec</a>
					</li>

					<li<%= sidebar_current("docs-provisioners-remote") %>>
					<a href="/docs/provisioners/remote-exec.html">remote-exec</a>
					</li>
				</ul>
				</li>

				<li<%= sidebar_current("docs-guides") %>>
				<a href="/docs/guides/index.html">Guides</a>
				<ul class="nav">
					<li<%= sidebar_current("docs-guides-servers") %>>
					<a href="/docs/guides/servers.html">Adding/Removing Servers</a>
					</li>

					<li<%= sidebar_current("docs-guides-bootstrapping") %>>
					<a href="/docs/guides/bootstrapping.html">Bootstrapping</a>
					</li>

					<li<%= sidebar_current("docs-guides-dns-cache") %>>
					<a href="/docs/guides/dns-cache.html">DNS Caching</a>
					</li>

					<li<%= sidebar_current("docs-guides-forwarding") %>>
					<a href="/docs/guides/forwarding.html">DNS Forwarding</a>
					</li>

					<li<%= sidebar_current("docs-guides-external") %>>
					<a href="/docs/guides/external.html">External Services</a>
					</li>

					<li<%= sidebar_current("docs-guides-leader") %>>
					<a href="/docs/guides/leader-election.html">Leader Election</a>
					</li>

					<li<%= sidebar_current("docs-guides-datacenters") %>>
					<a href="/docs/guides/datacenters.html">Multiple Datacenters</a>
					</li>

					<li<%= sidebar_current("docs-guides-outage") %>>
					<a href="/docs/guides/outage.html">Outage Recovery</a>
					</li>
				</ul>

				<li<%= sidebar_current("docs-internals") %>>
				<a href="/docs/internals/index.html">Internals</a>
				<ul class="nav">
					<li<%= sidebar_current("docs-internals-architecture") %>>
					<a href="/docs/internals/architecture.html">Architecture</a>
					</li>

					<li<%= sidebar_current("docs-internals-consensus") %>>
					<a href="/docs/internals/consensus.html">Consensus Protocol</a>
					</li>

					<li<%= sidebar_current("docs-internals-gossip") %>>
					<a href="/docs/internals/gossip.html">Gossip Protocol</a>
					</li>

					<li<%= sidebar_current("docs-internals-sessions") %>>
					<a href="/docs/internals/sessions.html">Sessions</a>
					</li>

					<li<%= sidebar_current("docs-internals-security") %>>
					<a href="/docs/internals/security.html">Security Model</a>
					</li>

					<li<%= sidebar_current("docs-internals-jepsen") %>>
					<a href="/docs/internals/jepsen.html">Jepsen Testing</a>
					</li>
				</ul>
				</li>
			</ul>
		</div>
	<% end %>

		<%= yield %>
	<% end %>