From a24d12ee815ec40d6f27c4e7acb79ade649e4f4a Mon Sep 17 00:00:00 2001
From: Craig Williams <craig@avsdev.uk>
Date: Tue, 13 Jan 2026 17:00:23 +0000
Subject: [PATCH] Override the locale string UF provides to a legal language
 identifier [ZN-MDD-14]

---
 src/ServicesProvider/ServicesProvider.php |  2 +
 src/Twig/LocaleOverrideExtension.php      | 52 +++++++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 src/Twig/LocaleOverrideExtension.php

diff --git a/src/ServicesProvider/ServicesProvider.php b/src/ServicesProvider/ServicesProvider.php
index d551c4a..87ed700 100644
--- a/src/ServicesProvider/ServicesProvider.php
+++ b/src/ServicesProvider/ServicesProvider.php
@@ -18,6 +18,7 @@ use Psr\Http\Message\ResponseInterface as Response;
 use Psr\Http\Message\ServerRequestInterface as Request;
 use UserFrosting\Sprinkle\Core\Log\MixedFormatter;
 use UserFrosting\Sprinkle\UFTweaks\Twig\HasRoleExtension;
+use UserFrosting\Sprinkle\UFTweaks\Twig\LocaleOverrideExtension;
 use UserFrosting\Sprinkle\UFTweaks\Twig\MobileDetectExtension;
 use UserFrosting\Sprinkle\UFTweaks\Mail\RetryMailer;
 
@@ -185,6 +186,7 @@ class ServicesProvider
 
             $twig->addExtension(new HasRoleExtension($c));
             $twig->addExtension(new MobileDetectExtension($c));
+            $twig->addExtension(new LocaleOverrideExtension($c));
 
             return $view;
         });
diff --git a/src/Twig/LocaleOverrideExtension.php b/src/Twig/LocaleOverrideExtension.php
new file mode 100644
index 0000000..063ded5
--- /dev/null
+++ b/src/Twig/LocaleOverrideExtension.php
@@ -0,0 +1,52 @@
+<?php
+
+/*
+ * AVSDev UF Tweaks (https://avsdev.uk)
+ *
+ * @link      https://git.avsdev.uk/avsdev/sprinkle-uf-tweaks
+ * @license   https://git.avsdev.uk/avsdev/sprinkle-uf-tweaks/blob/master/LICENSE.md (LGPL-3.0 License)
+ */
+
+namespace UserFrosting\Sprinkle\UFTweaks\Twig;
+
+use Psr\Container\ContainerInterface;
+use Twig\Extension\AbstractExtension;
+use Twig\Extension\GlobalsInterface;
+
+/**
+ * Overrides the page language to 'en' only
+ */
+class LocaleOverrideExtension extends AbstractExtension implements GlobalsInterface
+{
+    /**
+     * @var ContainerInterface
+     */
+    protected $services;
+
+    /**
+     * @var Config
+     */
+    protected $config;
+
+    /**
+     * @param ContainerInterface $services
+     */
+    public function __construct(ContainerInterface $services)
+    {
+        $this->services = $services;
+    }
+
+    /**
+     * Adds Twig global variable 'currentLocale'
+     *
+     * @return array[mixed]
+     */
+    public function getGlobals(): array
+    {
+        $locale = $this->services->locale->getLocaleIndentifier();
+        $parts = explode('_', $locale) ?: [];
+        return [
+            'currentLocale' => $parts[0]
+        ];
+    }
+}