feat(api): added configuration for orphaned FAQs in API (#3876)

Author: thorsten

phpmyfaq/src/phpMyFAQ/Controller/Api/FaqController.php

@@ -539,13 +539,14 @@ public function list(): JsonResponse
         );
 
         $onlyActive = (bool) $this->configuration->get('api.onlyActiveFaqs');
+        $ignoreOrphanedFaqs = (bool) $this->configuration->get('api.ignoreOrphanedFaqs');
 
         // Get all FAQs (this populates $faq->faqRecords)
         $faq->getAllFaqs(
             FAQ_SORTING_TYPE_CATID_FAQID,
             [
                 'lang' => $this->configuration->getLanguage()->getLanguage(),
-                'fcr.category_id' => 'IS NOT NULL',
+                'fcr.category_id' => $ignoreOrphanedFaqs ? 'IS NOT NULL' : null,
                 'fd.active' => $onlyActive ? 'yes' : null,
             ],
             $sort->getOrderSql(),

phpmyfaq/src/phpMyFAQ/Faq.php

@@ -1333,6 +1333,9 @@ public function getAllFaqs(
     ): void {
         $where = '';
         if (!is_null($condition)) {
+            // Filter out null values from conditions
+            $condition = array_filter($condition, fn($value) => $value !== null);
+
             $num = count($condition);
             $where = 'WHERE ';
             foreach ($condition as $field => $data) {