From e48e4ccbd3bb1a61c82bf3a83e1c66217cb0ccac Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Wed, 5 Aug 2009 20:35:28 +0000
Subject: [PATCH] Send an appropriate Vary header when we negotiate the
 language to stop caches doing the wrong thing. Closes #1995.

---
 app/controllers/application_controller.rb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 0d6cdea64..2093a959c 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -101,9 +101,12 @@ class ApplicationController < ActionController::Base
   end
   
   def set_locale
+    response.header['Vary'] = 'Accept-Language'
+
     if @user
       if !@user.languages.empty?
         request.user_preferred_languages = @user.languages
+        response.header['Vary'] = '*'
       elsif !request.user_preferred_languages.empty?
         @user.languages = request.user_preferred_languages
         @user.save
-- 
2.39.5