From 96fb244d2ed3492d679c81f8d7a9ec5b334751f0 Mon Sep 17 00:00:00 2001
From: Sebastian Zoglowek <55794780+zoglo@users.noreply.github.com>
Date: Mon, 11 Sep 2023 19:21:42 +0200
Subject: [PATCH] Fixed an issue with relative urls not working in contao 4.13

---
 contao/classes/Glossary.php | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/contao/classes/Glossary.php b/contao/classes/Glossary.php
index 4ba37a1..1f78159 100644
--- a/contao/classes/Glossary.php
+++ b/contao/classes/Glossary.php
@@ -69,7 +69,7 @@ public static function generateUrl(GlossaryItemModel $objItem, bool $blnAbsolute
                 {
                     $url = $objItem->url;
 
-                    if (Validator::isRelativeUrl($url))
+                    if (self::isRelativeUrl($url))
                     {
                         $url = Environment::get('path') . '/' . $url;
                     }
@@ -320,4 +320,17 @@ public static function transliterateAscii(string $string): string
     {
         return (string) u($string)->ascii();
     }
+
+    /**
+     * ToDo: Remove when Contao 4.13 support ends
+     * Valid relative URL
+     *
+     * @param mixed $varValue The value to be validated
+     *
+     * @return boolean True if the value is a relative URL
+     */
+    private static function isRelativeUrl($varValue)
+    {
+        return Validator::isUrl($varValue) && !preg_match('(^([0-9a-z+.-]+:|#|/|\{\{))i', $varValue);
+    }
 }