fix: added check on missing translation keys for permissions

Author: thorsten

phpmyfaq/src/phpMyFAQ/Template/Extensions/PermissionTranslationTwigExtension.php

@@ -32,6 +32,7 @@ public function getFilters(): array
 
     private function getPermissionTranslation(string $string): string
     {
-        return empty($string) ? '' : (Translation::get(sprintf('permission::%s', $string)) ?? '');
+        $key = sprintf('permission::%s', $string);
+        return Translation::has($key) ? Translation::get($key) : '';
     }
 }

phpmyfaq/src/phpMyFAQ/Translation.php

@@ -66,7 +66,6 @@ public static function get(string $languageKey): string|array|null
 
             return self::$translation->loadedLanguages[self::$translation->defaultLanguage][$languageKey];
         } catch (Exception) {
-            // handle exception
             Configuration::getConfigurationInstance()->getLogger()->error(
                 'Error while fetching translation key: ' . $languageKey
             );
@@ -75,6 +74,27 @@ public static function get(string $languageKey): string|array|null
         return null;
     }
 
+    /**
+     * Checks if a specific translation key exists in the current or default language.
+     */
+    public static function has(string $languageKey): bool
+    {
+        try {
+            self::$translation->checkInit();
+            self::$translation->checkLanguageLoaded();
+
+            if (isset(self::$translation->loadedLanguages[self::$translation->currentLanguage][$languageKey])) {
+                return true;
+            }
+            if (isset(self::$translation->loadedLanguages[self::$translation->defaultLanguage][$languageKey])) {
+                return true;
+            }
+        } catch (Exception) {
+        }
+
+        return false;
+    }
+
     /**
      * @throws Exception
      */