{{- $page := . -}}
{{- with $page.Params.dossier -}}
  {{- $dossierID := index . 0 -}}
  {{- if $dossierID -}}
    {{- $group := where site.RegularPages "Params.dossier" "intersect" (slice $dossierID) -}}
    {{- $sorted := sort $group "RelPermalink" "asc" -}}
    {{- $sorted = sort $sorted "Date" "asc" -}}
    {{- $sorted = sort $sorted "Weight" "asc" -}}
    {{- if gt (len $sorted) 1 -}}
      {{- $scratch := newScratch -}}
      {{- $scratch.Set "index" -1 -}}
      {{- range $i, $item := $sorted -}}
        {{- if eq $item.Permalink $page.Permalink -}}
          {{- $scratch.Set "index" $i -}}
        {{- end -}}
      {{- end -}}
      {{- $index := $scratch.Get "index" -}}
      {{- if ge $index 0 -}}
        {{- $prev := false -}}
        {{- $next := false -}}
        {{- if gt $index 0 -}}
          {{- $prev = index $sorted (sub $index 1) -}}
        {{- end -}}
        {{- if lt (add $index 1) (len $sorted) -}}
          {{- $next = index $sorted (add $index 1) -}}
        {{- end -}}
<footer class="article-footer">
  <nav class="article-footer-dossier-nav" aria-label="Navigation dans le dossier">
    <p class="article-footer-dossier-nav-label"><span>Dossier</span><strong>{{ $dossierID }}</strong></p>
    <div class="article-footer-dossier-nav-links">
      {{- with $prev -}}
      <p class="article-footer-dossier-nav-link article-footer-dossier-nav-link-prev">
        <span>Page précédente</span>
        <a href="{{ .RelPermalink }}" title="{{ .Title }}">{{ .Title }}</a>
      </p>
      {{- end -}}
      {{- with $next -}}
      <p class="article-footer-dossier-nav-link article-footer-dossier-nav-link-next">
        <span>Page suivante</span>
        <a href="{{ .RelPermalink }}" title="{{ .Title }}">{{ .Title }}</a>
      </p>
      {{- end -}}
    </div>
  </nav>
</footer>
      {{- end -}}
    {{- end -}}
  {{- end -}}
{{- end -}}