{{- with $photoPage := $.Page.GetPage (printf "photos/%s" (.Get 0)) -}}
    {{- $thumbnail := partial "images/photo_thumbnail.html" (dict "Page" . "Width" 1280 "Height" 1280) -}}
    <a href="{{ .RelPermalink }}" title="{{ .Title }}">
        <img src="{{ $thumbnail.RelPermalink }}" {{/*{{ with $altText }}alt="{{ . }}"{{ end }}*/}}>
    </a>
{{- else -}}
    {{- errorf "No page matching '%s'" (.Get 0) -}}
{{- end -}}