layouts/partials/pagination.html


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{{ $icons := (.Scratch.Get "svgBundle").RelPermalink }}

{{ $pag := $.Paginator }}


<!--
  Blatantly copied from Glenn McComb
  Source: https://glennmccomb.com/articles/how-to-build-custom-hugo-pagination/
-->

<!-- Number of links either side of the current page. Default value is 2 -->
{{ $adjacent_links := 1 }}

<!-- $max_links = ($adjacent_links * 2) + 1 -->
{{ $max_links := (add (mul $adjacent_links 2) 1) }}

<!-- $lower_limit = $adjacent_links + 1 -->
{{ $lower_limit := (add $adjacent_links 1) }}

<!-- $upper_limit = $pag.TotalPages - $adjacent_links -->
{{ $upper_limit := (sub $pag.TotalPages $adjacent_links) }}

<!-- If there's more than one page. -->
{{ if gt $pag.TotalPages 1 }}

  <nav>
    <ul class="pagination">
      
      <!-- First page. -->
      {{ if ne $pag.PageNumber 1 }}
      <li>
        <a class="btn" href="{{ $pag.First.URL }}" aria-label="{{ T "go_to_first" }}">
          <svg aria-hidden="true">
            <use transform="rotate(180) translate(-18 -18)" xlink:href="{{ $icons }}#angle-double-right"/>
          </svg>
        </a>
      </li>
      {{ end }}

      <!-- Previous page. -->
      {{ if $pag.HasPrev }}
      <li>
        <a class="btn" href="{{ $pag.Prev.URL }}" aria-label="{{ T "go_to_prev" }}">
          <svg transform="rotate(180)" aria-hidden="true">
            <use xlink:href="{{ $icons }}#angle-right"/>
          </svg>
        </a>
      </li>
      {{ end }}
    
      <!-- Page numbers. -->
      {{ range $pag.Pagers }}
      
        {{ $.Scratch.Set "page_number_flag" false }}
        
        <!-- Advanced page numbers. -->
        {{ if gt $pag.TotalPages $max_links }}

          <!-- Lower limit pages. -->
          <!-- If the user is on a page which is in the lower limit.  -->
          {{ if le $pag.PageNumber $lower_limit }}

            <!-- If the current loop page is less than max_links. -->
            {{ if le .PageNumber $max_links }}
              {{ $.Scratch.Set "page_number_flag" true }}
            {{ end }}


          <!-- Upper limit pages. -->
          <!-- If the user is on a page which is in the upper limit. -->
          {{ else if ge $pag.PageNumber $upper_limit }}

            <!-- If the current loop page is greater than total pages minus $max_links -->
            {{ if gt .PageNumber (sub $pag.TotalPages $max_links) }}
              {{ $.Scratch.Set "page_number_flag" true }}
            {{ end }}


          <!-- Middle pages. -->
          {{ else }}
            
            {{ if and ( ge .PageNumber (sub $pag.PageNumber $adjacent_links) ) ( le .PageNumber (add $pag.PageNumber $adjacent_links) ) }}
              {{ $.Scratch.Set "page_number_flag" true }}
            {{ end }}

          {{ end }}

        
        <!-- Simple page numbers. -->
        {{ else }}

          {{ $.Scratch.Set "page_number_flag" true }}

        {{ end }}

        <!-- Output page numbers. -->
        {{ if eq ($.Scratch.Get "page_number_flag") true }}
          <li {{ if eq . $pag }}class="current"{{ end }}>
          {{ if eq . $pag }}
            <p>{{ .PageNumber }}</p>
          {{ else }}
            <a class="btn" href="{{ .URL }}" aria-label="{{ T "go_to_pag" . }}" >{{ .PageNumber }}</a>
          {{ end }}
          </li>
        {{ end }}

      {{ end }}

      <!-- Next page. -->
      {{ if $pag.HasNext }}
      <li>
        <a class="btn" href="{{ $pag.Next.URL }}" aria-label="{{ T "go_to_next" }}">
          <svg aria-hidden="true">
            <use xlink:href="{{ $icons }}#angle-right"/>
          </svg>
        </a>
      </li>
      {{ end }}

      <!-- Last page. -->
      {{ if ne $pag.PageNumber $pag.TotalPages }}
      <li>
        <a class="btn" href="{{ $pag.Last.URL }}" aria-label="{{ T "go_to_last" }}">
          <svg aria-hidden="true">
            <use xlink:href="{{ $icons }}#angle-double-right"/>
          </svg>
        </a>
      </li>
      {{ end }}

    </ul>
  </nav>
{{ end }}