hugo-academic/layouts/partials/docs_sidebar.html

{{ $current_page := . }}
{{ $menu_name := (path.Base (path.Split .Path).Dir) }}
{{ with (index .Site.Menus $menu_name) }}
{{ else }}
{{ errorf "Please define menu items named `[menu.%s]` in your %s front matter or define `[[menu.%s]]` in `config.toml`." $menu_name .Path $menu_name }}
{{ end }}

<form class="docs-search d-flex align-items-center">
  <button class="btn docs-toggle d-md-none p-0 mr-3" type="button" data-toggle="collapse" data-target="#docs-nav" aria-controls="docs-nav" aria-expanded="false" aria-label="Toggle section navigation">
    <span><i class="fas fa-bars"></i></span>
  </button>

  {{ if eq $.Site.Params.search.engine 1 }}
  <input name="q" type="search" class="form-control" id="search-query" placeholder="{{ i18n "search_placeholder" }}" autocomplete="off">
  {{ end }}
</form>

<nav class="collapse docs-links" id="docs-nav">
  {{ with (index .Site.Menus $menu_name) }}
  {{ range (index $.Site.Menus $menu_name).ByWeight }}
  <div class="docs-toc-item{{ if $current_page.IsMenuCurrent $menu_name . }} active{{ end }}">
    <a class="docs-toc-link" {{ if .URL }}href="{{ .URL }}"{{else if .HasChildren }}href="{{ (index .Children 0).URL }}"{{end}}>{{ .Name }}</a>

    {{- if .HasChildren }}
    <ul class="nav docs-sidenav">
      {{ range .Children }}
      <li {{ if $current_page.IsMenuCurrent $menu_name . }}class="active"{{ end }}>
        <a href="{{ .URL }}">{{ .Name }}</a>
      </li>
      {{ end }}
    </ul>
    {{ end }}

  </div>
  {{ end }}
  {{ end }}
</nav>