Language switch.

Make it available on proxied environments
that serve the shops under a path prefix.

1 files changed, 2 insertions, 2 deletions

diff --git a/talermerchantdemos/blog/blog.py b/talermerchantdemos/blog/blog.py
index d8bf6d6..c257eb8 100644
--- a/talermerchantdemos/blog/blog.py
+++ b/talermerchantdemos/blog/blog.py
@@ -395,14 +395,14 @@ def article(article_name, lang=None, data=None):
             "order_id",
             ai,
             path=urllib.parse.quote(
-                flask.request.environ["SCRIPT_NAME"] + f"/essay/{article_name}"
+                flask.request.environ.get("SCRIPT_NAME", "") + f"/essay/{article_name}"
             )
         )
         response.set_cookie(
             "order_id",
             ai,
             path=urllib.parse.quote(
-                flask.request.environ["SCRIPT_NAME"] + f"/{lang}/essay/{article_name}"
+                flask.request.environ.get("SCRIPT_NAME", "") + f"/{lang}/essay/{article_name}"
             )
         )
         return response