terraform/website/source/layouts/digitalocean.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/providers/index.html">All Providers</a>
                </li>

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

        <li<%= sidebar_current("docs-do-datasource") %>>
        <a href="#">Data Sources</a>
                <ul class="nav nav-visible">
                    <li<%= sidebar_current("docs-do-datasource-image") %>>
          <a href="/docs/providers/do/d/image.html">digitalocean_image</a>
                    </li>
                </ul>
        </li>

        <li<%= sidebar_current("docs-do-resource") %>>
        <a href="#">Resources</a>
                <ul class="nav nav-visible">
                  <li<%= sidebar_current("docs-do-resource-certificate") %>>
                    <a href="/docs/providers/do/r/certificate.html">digitalocean_certificate</a>
                  </li>
                    <li<%= sidebar_current("docs-do-resource-domain") %>>
          <a href="/docs/providers/do/r/domain.html">digitalocean_domain</a>
                    </li>

                    <li<%= sidebar_current("docs-do-resource-droplet") %>>
          <a href="/docs/providers/do/r/droplet.html">digitalocean_droplet</a>
                    </li>

                  <li<%= sidebar_current("docs-do-resource-floating-ip") %>>
                    <a href="/docs/providers/do/r/floating_ip.html">digitalocean_floating_ip</a>
                  </li>

                  <li<%= sidebar_current("docs-do-resource-loadbalancer") %>>
                    <a href="/docs/providers/do/r/loadbalancer.html">digitalocean_loadbalancer</a>
                  </li>

                    <li<%= sidebar_current("docs-do-resource-record") %>>
          <a href="/docs/providers/do/r/record.html">digitalocean_record</a>
                    </li>

                    <li<%= sidebar_current("docs-do-resource-ssh-key") %>>
                    <a href="/docs/providers/do/r/ssh_key.html">digitalocean_ssh_key</a>
                    </li>
                    <li<%= sidebar_current("docs-do-resource-tag") %>>
                    <a href="/docs/providers/do/r/tag.html">digitalocean_tag</a>
                    </li>
                    <li<%= sidebar_current("docs-do-resource-volume") %>>
                    <a href="/docs/providers/do/r/volume.html">digitalocean_volume</a>
                    </li>
        </ul>
        </li>
      </ul>
    </div>
  <% end %>

  <%= yield %>
  <% end %>