{{- $ctx := . -}}
{{- $scratch := newScratch -}}
{{- $scratch.Set "blocks" 0 -}}
{{- range $taxonomy, $_ := $ctx.Site.Taxonomies -}}
  {{- with $ctx.Page.GetTerms $taxonomy -}}
    {{- $scratch.Add "blocks" 1 -}}
  {{- end -}}
{{- end -}}
{{- with $ctx.Params.keywords -}}
  {{- if gt (len .) 0 -}}
    {{- $scratch.Add "blocks" 1 -}}
  {{- end -}}
{{- end -}}
{{- if gt ($scratch.Get "blocks") 0 }}
<aside class="panel">
  <details>
    <summary>Taxonomies</summary>
  {{- range $taxonomy, $_ := $ctx.Site.Taxonomies -}}
    {{- with $ctx.Page.GetTerms $taxonomy }}
    <section>
      {{- $taxonomyPage := $ctx.Site.GetPage "taxonomy" $taxonomy -}}
      <h2>{{ with $taxonomyPage }}{{ .Title }}{{ else }}{{ humanize $taxonomy }}{{ end }}</h2>
      {{- partial "keywords.html" . }}
    </section>
    {{- end }}
  {{- end }}
  </details>
</aside>
{{- end }}