From 2a5a0541672f03cbe012d2ed558005c57d86dfad Mon Sep 17 00:00:00 2001
From: Thomas <27960254+thomiceli@users.noreply.github.com>
Date: Fri, 26 Jun 2026 02:59:41 +0700
Subject: [PATCH] Add rel="canonical" link tag (#732)

---
 internal/web/server/middlewares.go | 1 +
 templates/base/base_header.html    | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/internal/web/server/middlewares.go b/internal/web/server/middlewares.go
index bd5f2f1..591c365 100644
--- a/internal/web/server/middlewares.go
+++ b/internal/web/server/middlewares.go
@@ -158,6 +158,7 @@ func dataInit(next Handler) Handler {
 		}
 
 		ctx.SetData("baseHttpUrl", baseHttpUrl)
+		ctx.SetData("canonicalUrl", baseHttpUrl+ctx.Request().URL.Path)
 
 		return next(ctx)
 	}
diff --git a/templates/base/base_header.html b/templates/base/base_header.html
index 176d8dd..3c64a01 100644
--- a/templates/base/base_header.html
+++ b/templates/base/base_header.html
@@ -9,6 +9,10 @@
 
     <base href="{{ $.c.ExternalUrl }}" />
 
+    {{ if .canonicalUrl }}
+        <link rel="canonical" href="{{ .canonicalUrl }}" />
+    {{ end }}
+
     <script>
         window.opengist_base_url = "{{ $.c.ExternalUrl }}";
         window.opengist_locale = "{{ .locale.Code }}".substring(0, 2);