Fix RSS feeds not being cachable (#14368)

* Add tests for some cachable responses

This only covers responses that we should have managed to make cachable
so far. It's not the case of all responses that should be cachable in
the end.

* Fix RSS feeds not being cachable

1 files changed, 1 insertions, 1 deletions

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 973db6aca..2201e463e 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -55,7 +55,7 @@ class ApplicationController < ActionController::Base
   end
 
   def store_current_location
-    store_location_for(:user, request.url) unless request.format == :json
+    store_location_for(:user, request.url) unless [:json, :rss].include?(request.format&.to_sym)
   end
 
   def require_admin!