From 61c6d2a7fc462c7d56f7ab1e56b8643de0df7f8d Mon Sep 17 00:00:00 2001
From: Natalie Tay <natalie.tay@discourse.org>
Date: Tue, 28 May 2024 12:59:24 +0800
Subject: [PATCH] DEV: Also noindex embedded comments (#27221)

For some reason, despite iframe also indicating a

```
<meta name="robots" content="noindex">
```

.. Google is still indexing the embed/comment URLs. This causes links like http://\<site>/embed/comments\?topic_id\=6366 to be indexed instead of the topic.

This commit adds it explicitly in the header.
---
 app/controllers/embed_controller.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/controllers/embed_controller.rb b/app/controllers/embed_controller.rb
index 8974e4be1b6..b0bd5893997 100644
--- a/app/controllers/embed_controller.rb
+++ b/app/controllers/embed_controller.rb
@@ -85,13 +85,13 @@ class EmbedController < ApplicationController
       raise Discourse::InvalidAccess.new("invalid embed host")
     end
 
-    topic_id = nil
     if embed_url.present?
       topic_id = TopicEmbed.topic_id_for_embed(embed_url)
     else
       topic_id = params[:topic_id].to_i
     end
 
+    response.headers["X-Robots-Tag"] = "noindex, indexifembedded"
     if topic_id
       @topic_view =
         TopicView.new(