{{ $currentSection := .Section -}}
{{ $currentID := "" -}}
{{ with .File }}{{ $currentID = .UniqueID }}{{ end -}}
<aside class="sidebar layout__second-sidebar">
{{ range .Site.Sections -}}
<section>
<h4 class="menu"><a href="{{ .RelPermalink }}"{{ if eq $currentSection .Section }} class="active" aria-current="page"{{ end }}>{{ .Title }}</a></h4>
<ul class="menu">
{{ range .Pages -}}
<li><a href="{{ .RelPermalink }}"{{ if eq $currentID .File.UniqueID }} class="active" aria-current="page"{{ end }}>{{ .Title }}</a></li>
{{ end -}}
</ul>
</section>
{{ end -}}
</aside>