Use root relative redirect paths and make absolute in layout

robobario · robobario · commit dbc6605e708a · 2025-07-31T13:59:42.000+12:00
Why:
I want to re-use the redirect layout from some HTML frontmatter, and
you cannot use liquid templating nicely in the Jekyll frontmatter to
create an absolute url like "target: {{"/path/to/target" | absolute_url}}".
I want to use root relative paths so that it works when there is a base
url.

In future the layout would need adjustment if we wanted it to handle
absolute redirect targets, maybe passing a different property to the
page, or sniffing the first N characters for http:/https:

Signed-off-by: Robert Young &lt;robertyoungnz@gmail.com&gt;
diff --git a/_data/redirects/errors.yaml b/_data/redirects/errors.yaml
@@ -1,4 +1,4 @@
-baseUrl: https://kroxylicious.io/documentation/
+baseUrl: /documentation/
 delay: 3
 mappings:
   - name: clientTls
diff --git a/_layouts/redirect.html b/_layouts/redirect.html
@@ -1,4 +1,5 @@
 <!doctype html>
+{% assign absolute_target = page.target | absolute_url %}
 <html lang="en">
 <head>
     <meta charset="utf-8">
@@ -13,13 +14,13 @@
     <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.3.2/js/bootstrap.bundle.min.js"
             integrity="sha512-X/YkDZyjTf4wyc2Vy16YGCPHwAY8rZJY+POgokZjQB2mhIRFJCckEGc6YyX9eNsPfn0PzThEuNs+uaomE5CO6A=="
             crossorigin="anonymous" referrerpolicy="no-referrer"></script>
-    <meta http-equiv="refresh" content="{{ page.delay }}; url={{ page.target }}">
+    <meta http-equiv="refresh" content="{{ page.delay }}; url={{ absolute_target }}">
 </head>
 <body class="d-flex flex-column min-vh-100" data-bs-theme="light">
 {% include nav.html %}
 <div class="container-fluid px-0 krx-content" data-bs-theme="light">
     <div class="paragraph" role="main">
-        <div>Redirecting to <a href="{{ page.target }}">{{ page.target }}</a>...</div>
+        <div>Redirecting to <a href="{{ absolute_target }}">{{ absolute_target }}</a>...</div>
         <div class="spinner-border text-success" role="status">
             <span class="visually-hidden">waiting...</span>
         </div>

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-baseUrl: https://kroxylicious.io/documentation/`
	`1`	`+baseUrl: /documentation/`
`2`	`2`	`delay: 3`
`3`	`3`	`mappings:`
`4`	`4`	`- name: clientTls`