hugo/docs/content/en/methods/pages/GroupByParam.md

title	description	categories	keywords	params
GroupByParam	Returns the given page collection grouped by the given parameter in ascending order.			functions_and_methods returnType signatures page.PagesGroup PAGES.GroupByParam PARAM [SORT]

{{% include "/_common/methods/pages/group-sort-order.md" %}}

{{ range .Pages.GroupByParam "color" }}
  <p>{{ .Key | title }}</p>
  <ul>
    {{ range .Pages }}
      <li><a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a></li>
    {{ end }}
  </ul>
{{ end }}

To sort the groups in descending order:

{{ range .Pages.GroupByParam "color" "desc" }}
  <p>{{ .Key | title }}</p>
  <ul>
    {{ range .Pages }}
      <li><a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a></li>
    {{ end }}
  </ul>
{{ end }}