hugo-theme-stack/layouts/partials/widget/series.html

{{- $query := first 1 (where .Site.Pages "Layout" "==" "archives") -}}
{{- if $query -}}
    {{- $archivesPage := index $query 0 -}}
    <section class="widget series">
        <div class="widget-icon">
            {{ partial "helper/icon" "series" }}
        </div>
        <h2 class="widget-title section-title">{{ T "widget.series.title" }}</h2>

        {{ $pages := where .Site.RegularPages "Type" "in" .Site.Params.mainSections }}
        {{ $notHidden := where .Site.RegularPages "Params.hidden" "!=" true }}
        {{ $filtered := ($pages | intersect $notHidden) }}
        {{ $archives := $filtered.GroupByParam "series" }}

        <div class="widget-series--list">
            {{ range $index, $item := first (add .Site.Params.widgets.series.limit 1) ($archives) }}
                {{- $id := lower (replace $item.Key " " "-") -}}
                <div class="series-stream">
                    <a href="{{ $.Site.BaseURL}}series/{{ $id }}">
                        {{ if eq $index $.Site.Params.widgets.series.limit }}
                            <span class="stream">{{ T "widget.series.more" }}</span>
                        {{ else }}
                            <span class="stream">{{ .Key }}</span>
                            <span class="count">{{ len $item.Pages }}</span>
                        {{ end }}
                    </a>
                </div>
            {{ end }}
        </div>
    </section>
{{- else -}}
    {{- warnf "Series page not found. Create a page with layout: series." -}}
{{- end -}}