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

title	description	categories	keywords	action
ByParam	Returns the given page collection sorted by the given parameter in ascending order.			related returnType signatures methods/pages/ByTitle methods/pages/ByLinkTitle page.Pages PAGES.ByParam PARAM

If the given parameter is not present in front matter, Hugo will use the matching parameter in your site configuration if present.

{{ range .Pages.ByParam "author" }}
  <h2><a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a></h2>
{{ end }}

To sort in descending order:

{{ range (.Pages.ByParam "author").Reverse }}
  <h2><a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a></h2>
{{ end }}

If the targeted parameter is nested, access the field using dot notation:

{{ range .Pages.ByParam "author.last_name" }}
  <h2><a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a></h2>
{{ end }}