feat: enhance sitemap by excluding some pages

hugo.yaml

@@ -117,6 +117,7 @@ params:
   mainSections: ["post"]
   description: "A blog documenting my homelab journey, covering automation, self-hosted services, and hands-on experiments with open source technologies."
   favicon: "/favicon-32x32.png"
+  excludedFromSitemap: ["/tags/", "/categories/", "/search/"]
 
   sidebar:
     avatar:

layouts/_default/sitemap.xml

@@ -2,14 +2,16 @@
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
   xmlns:xhtml="http://www.w3.org/1999/xhtml">
   {{ range .Pages }}
-    <url>
-      <loc>{{ .Permalink }}</loc>
-      {{ if not .Lastmod.IsZero }}
-        <lastmod>{{ .Lastmod.Format "2006-01-02T15:04:05-07:00" | safeHTML }}</lastmod>
-      {{ end }}
-      {{ with .Sitemap.ChangeFreq }}
-        <changefreq>{{ . }}</changefreq>
-      {{ end }}
-    </url>
+    {{ if not (in .Site.Params.excludedFromSitemap .Data.Plural) }}
+      <url>
+        <loc>{{ .Permalink }}</loc>
+        {{ if not .Lastmod.IsZero }}
+          <lastmod>{{ .Lastmod.Format "2006-01-02T15:04:05-07:00" | safeHTML }}</lastmod>
+        {{ end }}
+        {{ with .Sitemap.ChangeFreq }}
+          <changefreq>{{ . }}</changefreq>
+        {{ end }}
+      </url>
+    {{ end }}
   {{ end }}
 </urlset>