From b80c3e6760d980334da884069a89ab2f8713aa37 Mon Sep 17 00:00:00 2001
From: Ashley Harrison <ashley.harrison@grafana.com>
Date: Wed, 15 Oct 2025 16:51:44 +0100
Subject: [PATCH] Frontend service: Pass query params to `/bootdata` call
 (#112448)

pass query params to /bootdata call
---
 pkg/services/frontend/index.html | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/pkg/services/frontend/index.html b/pkg/services/frontend/index.html
index 34c4d4f89ed..9f5b5d48dba 100644
--- a/pkg/services/frontend/index.html
+++ b/pkg/services/frontend/index.html
@@ -212,7 +212,16 @@
          * Will return a rejected promise on unrecoverable errors.
          **/
         async function fetchBootData() {
-          const resp = await fetch("/bootdata");
+          const queryParams = new URLSearchParams(window.location.search);
+
+          // pass the search params through to the bootdata request
+          // this allows for overriding the theme/language etc
+          const bootDataUrl = new URL('/bootdata', window.location.origin);
+          for (const [key, value] of queryParams.entries()) {
+            bootDataUrl.searchParams.append(key, value);
+          }
+
+          const resp = await fetch(bootDataUrl);
           const textResponse = await resp.text();
 
           let rawBootData;