Raise platform and dependency requirements

composer.json

@@ -4,12 +4,12 @@
   "type": "contao-bundle",
   "license": "proprietary",
   "require": {
-    "php": "^8.3",
+    "php": "^8.4",
     "contao/core-bundle": "^5.7",
     "contao/calendar-bundle": "5.7.*",
     "contao/manager-plugin": "^2.0",
-    "guzzlehttp/guzzle": "^7.9",
+    "guzzlehttp/guzzle": "^7.10",
-    "alnv/catalog-manager-bundle": "^3.0",
+    "alnv/catalog-manager-bundle": "^4.0",
     "janborg/contao-ical-bundle": "^0.5.4"
   },
   "autoload": {

src/Model/ExternalLocationModel.php

@@ -6,6 +6,13 @@ use PDO;
 
 class ExternalLocationModel
 {
+    private static function readEnv(string $key): string
+    {
+        $value = $_SERVER[$key] ?? $_ENV[$key] ?? getenv($key);
+
+        return is_string($value) ? trim($value) : '';
+    }
+
     /**
      * Erstellt die PDO-Verbindung zur externen Datenbank.
      *
@@ -13,9 +20,9 @@ class ExternalLocationModel
      */
     private static function getConnection()
     {
-        $dsn = getenv('KS_NOSSENERLAND_EXTERNAL_DB_DSN') ?: '';
+        $dsn = self::readEnv('KS_NOSSENERLAND_EXTERNAL_DB_DSN');
-        $user = getenv('KS_NOSSENERLAND_EXTERNAL_DB_USER') ?: '';
+        $user = self::readEnv('KS_NOSSENERLAND_EXTERNAL_DB_USER');
-        $password = getenv('KS_NOSSENERLAND_EXTERNAL_DB_PASSWORD') ?: '';
+        $password = self::readEnv('KS_NOSSENERLAND_EXTERNAL_DB_PASSWORD');
 
         if ('' === $dsn || '' === $user) {
             throw new \PDOException('Missing external DB env vars for location lookup.');