authelia/docs/layouts/partials/sidebar/auto-default-menu.html

<!-- Auto default section menu -->
{{ $currentPage := . -}}
{{ $section := $currentPage.Section -}}
{{ range (where .Site.Sections "Section" "in" $section) }}
{{ range .Sections.ByWeight }}
    {{ $active := in $currentPage.RelPermalink .RelPermalink }}
    <h3 class="h6 text-uppercase mb-2">{{ .Title }}</h3>
    <ul class="list-unstyled">
      {{ range .Pages }}
        {{ if .IsNode }}
          {{ $active := in $currentPage.RelPermalink .RelPermalink }}
          <h4 class="h6 text-uppercase ms-3 mt-3 mb-2">{{ .Title }}</h4>
          <ul class="list-unstyled ms-3">
            {{ range (.Pages.ByParam "Title").ByParam "Weight" }}
              {{ if .IsNode }}
                {{ $active := in $currentPage.RelPermalink .RelPermalink }}
                <h5 class="h6 text-uppercase mt-2 mb-2">{{ .Title }}</h5>
                <ul class="list-unstyled ms-3">
                  {{ range (.Pages.ByParam "Title").ByParam "Weight" }}
                    {{ $active := in $currentPage.RelPermalink .RelPermalink }}
                    <li><a class="docs-link{{ if $active }} active{{ end }}" href="{{ .Permalink }}">{{ .Name }}</a></li>
                  {{ end }}
                </ul>
              {{ else }}
                {{ $active := in $currentPage.RelPermalink .RelPermalink }}
                <li><a class="docs-link{{ if $active }} active{{ end }}" href="{{ .Permalink }}">{{ .Name }}</a></li>
              {{ end }}
            {{ end }}
          </ul>
        {{ else }}
          {{ $active := in $currentPage.RelPermalink .RelPermalink }}
          <li><a class="docs-link{{ if $active }} active{{ end }}" href="{{ .Permalink }}">{{ if (eq .CurrentSection.Title .Title) }}Introduction{{ else }}{{ .Name }}{{ end }}</a></li>
        {{ end }}
      {{ end }}
    </ul>
  {{ end }}
{{ end }}