From 6e74eb82765f3f3115ecadc0696fd646d7ca7801 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20B=C3=B6hmer?= <jan.h.boehmer@gmx.de>
Date: Thu, 12 Sep 2019 18:30:12 +0200
Subject: [PATCH] Match only valid locales for localized routes.

---
 config/routes/annotations.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/config/routes/annotations.yaml b/config/routes/annotations.yaml
index 836fcabc..bb85917e 100644
--- a/config/routes/annotations.yaml
+++ b/config/routes/annotations.yaml
@@ -3,3 +3,6 @@ controllers:
     type: annotation
 
     prefix: '{_locale}'
+    requirements:
+        # Match only locales like de_DE or de
+        _locale: "^[a-z]{2}(_[A-Z]{2})?$"