i18n

manage unsupported languages

1 files changed, 9 insertions, 1 deletions

diff --git a/talermerchantdemos/landing/landing.py b/talermerchantdemos/landing/landing.py
index b5142d6..23d11e8 100644
--- a/talermerchantdemos/landing/landing.py
+++ b/talermerchantdemos/landing/landing.py
@@ -23,6 +23,7 @@ import base64
 import logging
 import flask
 import uwsgi
+import werkzeug
 from flask import request, url_for
 from flask_babel import Babel
 from flask_babel import refresh
@@ -128,6 +129,12 @@ def index():
 @app.route("/<lang>/", methods=["GET"])
 def start(lang):
 
+    # get_locale defaults to english, hence the
+    # condition below happens only when lang is
+    # wrong or unsupported, respond 404.
+    if lang != get_locale():
+        raise werkzeug.exceptions.NotFound()
+
     if x := os.environ.get("TALER_ENV_URL_BANK"):
         bank_url = "/".join([x.strip("/"), f"?lang={lang}"])
         bank_register_url = bank_url
@@ -162,7 +169,8 @@ def start(lang):
     )
 
 
-@app.errorhandler(404)
+@app.errorhandler(404) # How to trigger this?
+@app.errorhandler(werkzeug.exceptions.NotFound)
 def handler_404(e):
     return flask.render_template(
         "landing-error.html.j2",