GroupByParam

Returns the given page collection grouped by the given parameter in ascending order.

{{ 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 }}