hugo-theme-relearn/layouts/partials/menu.html

    {{ "<!-- hack to let hugo tell us how to get to the root when using relativeURLs, it needs to be called *url= for it to do its magic: -->" | safeHTML }}
    {{ "<!-- https://github.com/gohugoio/hugo/blob/145b3fcce35fbac25c7033c91c1b7ae6d1179da8/transform/urlreplacers/absurlreplacer.go#L72 -->" | safeHTML }}
    <script>
      var index_url={{ "index.json" | relLangURL }};
      var root_url="/";
      var baseUri=root_url.replace(/\/$/, '');
    </script>
    <nav id="sidebar" class="default-animation {{ if $.Site.Params.showVisitedLinks }}showVisitedLinks{{ end }}">
      {{- $currentNode := . }}
      {{- $showvisitedlinks := .Site.Params.showVisitedLinks }}
      <div id="header-wrapper">
        <div id="header">
{{ partial "logo.html" . }}
        </div>
        {{- if not .Site.Params.disableSearch }}
{{ partial "search.html" . }}
        {{- end }}
      </div>
      {{- if not .Site.Params.disableLandingPageButton }}
      <div id="homelinks">
        <ul>
          <li>
              <a class="padding" href="{{ .Site.Params.landingPageURL | default "/" | relLangURL }}">{{ .Site.Params.landingPageName | default `<i class="fas fa-home"></i> Home` | safeHTML }}</a>
          </li>
        </ul>
      </div>
      {{- end }}
      <div class="highlightable">
        <ul class="topics">
          {{- $defaultOrdersectionsby := .Site.Params.ordersectionsby | default "weight" }}
          {{- $currentOrdersectionsby := .Site.Home.Params.ordersectionsby | default $defaultOrdersectionsby }}
          {{- $defaultAlwaysopen := .Site.Params.alwaysopen | default false }}
          {{- if eq $currentOrdersectionsby "title" }}
            {{- range .Site.Home.Sections.ByTitle }}
            {{- template "section-tree-nav" dict "sect" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen }}
            {{- end }}
          {{- else }}
            {{- range .Site.Home.Sections.ByWeight }}
            {{- template "section-tree-nav" dict "sect" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen }}
            {{- end }}
          {{- end }}
        </ul>
        {{- $disableShortcutsTitle := .Site.Params.DisableShortcutsTitle }}
        {{- with .Site.Menus.shortcuts }}
        <div id="shortcuts">
          <div class="nav-title">{{ if not $disableShortcutsTitle }}{{ T "Shortcuts-Title" }}{{ end }}</div>
          <ul>
            {{- range sort . "Weight" }}
            <li>{{ .Pre }}<a class="padding" href="{{ .URL | relLangURL }}">{{ safeHTML .Name }}</a>{{ .Post }}</li>
            {{- end }}
          </ul>
        </div>
        {{- end }}
        <div class="footermargin"></div>
        {{- $showlangswitch := and .Site.IsMultiLingual (not .Site.Params.disableLanguageSwitchingButton) }}
        {{- $themevariants := slice | append .Site.Params.themeVariant }}
        {{- $showthemeswitch := gt (int (len $themevariants)) 1 }}
        {{- $footer := partial "menu-footer.html" . }}
        {{- $showfooter := not (eq 0 (int (len $footer | plainify))) }}
        {{- if or $showlangswitch $showvisitedlinks $showfooter }}
        <hr/>
        {{- end }}
        {{- if or $showlangswitch $showthemeswitch $showvisitedlinks }}
        <div id="prefooter">
          <ul>
            {{- if $showlangswitch }}
            <li>
              <a class="padding select-container">
                <i class="fas fa-language fa-fw"></i>
                <div class="select-style">
                  <select id="select-language" onchange="location = baseUri + this.value;">
                    {{- $siteLanguages := .Site.Languages }}
                    {{- $pageLang := .Page.Lang }}
                    {{- range .Page.AllTranslations }}
                      {{- $translation := . }}
                      {{- range $siteLanguages }}
                        {{- if eq $translation.Lang .Lang }}
                          {{- if eq $pageLang .Lang }}
                    <option id="{{ $translation.Language }}" value="{{ $translation.RelPermalink }}" selected>{{ .LanguageName }}</option>
                          {{- else }}
                    <option id="{{ $translation.Language }}" value="{{ $translation.RelPermalink }}">{{ .LanguageName }}</option>
                          {{- end }}
                        {{- end }}
                      {{- end }}
                    {{- end }}
                  </select>
                </div>
              </a>
            </li>
            {{- end }}
            {{- if $showthemeswitch }}
            <li>
              <a class="padding select-container">
                <i class="fas fa-paint-brush fa-fw"></i>
                <div class="select-style">
                  <select id="select-theme" onchange="changeTheme( this.value );">
                    {{- $firsttheme := true }}
                    {{- range $themevariants }}
                      {{- $themevariant := . }}
                      {{- $themename := replaceRE "[-_]+" " " $themevariant }}
                      {{- if $firsttheme }}
                        {{- $firsttheme = false }}
                    <option id="{{ $themevariant }}" value="{{ $themevariant }}" selected>{{ $themename }}</option>
                      {{- else }}
                    <option id="{{ $themevariant }}" value="{{ $themevariant }}">{{ $themename }}</option>
                      {{- end }}
                    {{- end }}
                  </select>
                </div>
              </a>
            </li>
            {{- end }}
            {{- if $showvisitedlinks }}
            <li><a class="padding" href="#" data-clear-history-toggle=""><i class="fas fa-history fa-fw"></i> {{ T "Clear-History" }}</a></li>
            {{- end }}
          </ul>
        </div>
        {{- end }}
        {{- if $showfooter }}
        <div id="footer">
          {{- $footer }}
        </div>
        {{- end }}
      </div>
    </nav>
    {{- define "section-tree-nav" }}
      {{- $showvisitedlinks := .showvisitedlinks }}
      {{- $currentNode := .currentnode }}
      {{- $currentFileRelPermalink := .currentnode.RelPermalink }}
      {{- $alwaysopen := .alwaysopen }}
      {{- with .sect }}
        {{- $relearnIsHiddenFrom := index ($currentNode.Scratch.Get "relearnIsHiddenFrom") .RelPermalink }}
        {{- $hidden := and $relearnIsHiddenFrom (not $.showhidden) (not (.IsAncestor $currentNode)) }}
        {{- if $hidden }}
        {{- else if .IsSection }}
          {{- safeHTML .Params.head }}
          {{- $defaultOrdersectionsby := .Site.Params.ordersectionsby | default "weight" }}
          {{- $currentOrdersectionsby := .Params.ordersectionsby | default $defaultOrdersectionsby }}
          {{- $currentAlwaysopen := .Params.alwaysopen | default $alwaysopen }}
          <li data-nav-id="{{.RelPermalink}}" title="{{.Title}}" class="dd-item{{if eq .RelPermalink $currentFileRelPermalink}} active{{end}}{{if .IsAncestor $currentNode }} parent{{end}}{{if $currentAlwaysopen}} alwaysopen{{end}}"><a href="{{.RelPermalink}}">
              {{- partial "menu-pre.html" . }}{{ or .Params.menuTitle .LinkTitle .Title }}{{ partial "menu-post.html" . }}
              {{- if $showvisitedlinks }}<i class="fas fa-check read-icon"></i>{{ end }}</a><ul>
              {{- $pages := .Pages }}
              {{- if .Page.IsHome }}
                {{- $pages = .Sections }}
              {{- else if .Page.Sections}}
                {{- $pages = (.Pages | union .Sections) }}
              {{- end }}
              {{- $defaultAlwaysopen := .Site.Params.alwaysopen | default true }}
              {{- if eq $currentOrdersectionsby "title" }}
                {{- range $pages.ByTitle }}
                  {{- template "section-tree-nav" dict "sect" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen }}
                {{- end }}
              {{- else }}
                {{- range $pages.ByWeight }}
                {{- template "section-tree-nav" dict "sect" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen }}
                {{- end }}
              {{- end }}</ul></li>
        {{- else }}
          <li data-nav-id="{{.RelPermalink}}" title="{{.Title}}" class="dd-item{{if eq .RelPermalink $currentFileRelPermalink}} active{{end}}"><a href="{{.RelPermalink}}">
              {{- partial "menu-pre.html" . }}{{ or .Params.menuTitle .LinkTitle .Title }}{{ partial "menu-post.html" . }}
              {{- if $showvisitedlinks }}<i class="fas fa-check read-icon"></i>{{ end }}</a></li>
        {{- end }}
      {{- end }}
    {{- end }}