AI_Video_LP/layouts/partials/widgets/categories.html

<div class="panel panel-default sidebar-menu">
  <div class="panel-heading">
    <h3 class="panel-title">{{ i18n "categoriesTitle" }}</h3>
  </div>

{{ $blogFolder := .Site.GetPage "section" "blog" }}
{{ $current := . }}

{{ with $blogFolder }}
  {{ $blogPages := .Pages }}
  <div class="panel-body">
  <ul class="nav nav-pills nav-stacked">
    {{ $uniqueCategories := slice }}
    
    {{ range $blogPages }}
      {{ with .Params.categories }}
        {{ range . }}
          {{ $categoryName := . }}
          {{ if not (in $uniqueCategories $categoryName) }}
            {{ $uniqueCategories = $uniqueCategories | append $categoryName }}
            <li{{ if eq $current.RelPermalink (printf "/categories/%s/" $categoryName | urlize | lower) }} class="active"{{ end }}>
              <a href="{{ "categories/" | relURL }}{{ $categoryName | urlize | lower }}">{{ $categoryName | title }}</a>
            </li>
          {{ end }}
        {{ end }}
      {{ end }}
    {{ end }}
  </ul>
  </div>
{{ end }}
</div>

<!-- {{ if .Site.Params.widgets.categories }}
{{ if isset .Site.Taxonomies "categories" }}
{{ if not (eq (len .Site.Taxonomies.categories) 0) }}
<div class="panel panel-default sidebar-menu">

    <div class="panel-heading">
        <h3 class="panel-title">{{ i18n "categoriesTitle" }}</h3>
    </div>

    <div class="panel-body">
        <ul class="nav nav-pills nav-stacked">
            {{ $current := . }}
            {{ range $name, $items := .Site.Taxonomies.categories }}
            <li{{ if eq $current.RelPermalink ($name | urlize | lower | printf "/categories/%s/") }} class="active"{{ end }}>
                <a href="{{ "categories/" | relURL }}{{ $name | urlize | lower }}">{{ $name }} ({{ len $items }})</a>
            </li>
            {{ end }}
        </ul>
    </div>

</div>
{{ end }}
{{ end }}
{{ end }} -->