B16574: Added multiple siteConfigurations compatibility for typo3 v10 and 11. refs#16574

extension/Classes/Core/Store/T3Info.php

@@ -113,12 +113,10 @@ class T3Info {
                 return null;
             }
             $allSites = $sf->getAllSites();
-            if (count($allSites) > 1) {
-                Thrower::userReportException('Site language Error.', 'QFQ is does not run on Typo3 setup with multiple sites yet. Please contact QFQ maintainers.');
-            } elseif (count($allSites) < 1) {
+            if (count($allSites) < 1) {
                 return null;
             } else {
-                $site = reset($allSites);
+                $site = self::getSiteConfiguration($sf);
                 $lang = $site->getLanguageById($lid);
                 $base = $lang->getBase();
                 return (string)$base;
@@ -162,4 +160,22 @@ class T3Info {
 
         return $languagePath;
     }
+
+    /**
+     * Returns the site configuration from current page. Used for T3 >=V10.
+     *
+     * object $sf
+     * @return object
+     */
+    public static function getSiteConfiguration($sf): object {
+        if (T3Handler::typo3VersionGreaterEqual10() && isset($GLOBALS['TYPO3_REQUEST'])) {
+            $siteIdentifier = $GLOBALS['TYPO3_REQUEST']->getAttribute('site')->getIdentifier();
+            $actualSite = $sf->getSiteByIdentifier($siteIdentifier);
+        } else {
+            $allSites = $sf->getAllSites();
+            $actualSite = reset($allSites);
+        }
+
+        return $actualSite;
+    }
 }
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