hugo-academic/layouts/shortcodes/gallery.html

{{ $.Scratch.Set "album" "1" }}
{{ with .Get "album" }}{{ $.Scratch.Set "album" . }}{{ end }}
<div class="gallery">
  {{ range (where $.Page.Params.gallery_item "album" ($.Scratch.Get "album")) }}
  {{/* Set image path. */}}
  {{ $.Scratch.Set "src" .image }}
  {{ if gt (len .image) 4 }}
    {{ if ne "http" (slicestr .image 0 4) }}
      {{ $.Scratch.Set "src" (printf "img/%s" .image | relURL) }}
    {{ end }}
  {{ end }}
  <a data-fancybox="gallery{{ with .album }}-{{.}}{{ end }}" {{ with .caption }}data-caption="{{.}}"{{ end }} href="{{$.Scratch.Get "src"}}">
    <img alt="" src="{{$.Scratch.Get "src"}}">
  </a>
  {{ end }}
</div>