Fixes in patch:

- indenting in getQueryString function
- duplicate item not allowed, comparison condition
- newId in folders.class.php changed to array witout comma

Author: skt-jdrzik

api/Controller/Api/BaseController.php

@@ -59,14 +59,13 @@ public function getUriSegments()
     public function getQueryStringParams()
     {
         $request = symfonyRequest::createFromGlobals();
-       $queryString = $request->getQueryString();
-       if ($request->getContentTypeFormat() != 'application/json') {
-               parse_str(html_entity_decode($queryString), $query);
-               return $this->sanitizeUrl($query);
-       }
-
-       return $request->toArray();
+        $queryString = $request->getQueryString();
+        if ($request->getContentTypeFormat() != 'application/json') {
+            parse_str(html_entity_decode($queryString), $query);
+            return $this->sanitizeUrl($query);
+        }
 
+        return $request->toArray();
     }
 
     /**

api/Model/ItemModel.php

@@ -342,7 +342,8 @@ private function checkForDuplicates(string $label, array $SETTINGS, array $itemI
         );
 
         if (DB::count() > 0 && (
-            (isset($SETTINGS['duplicate_item']) && (int) $SETTINGS['duplicate_item'] === 0))
+	     (isset($SETTINGS['duplicate_item']) && (int) $SETTINGS['duplicate_item'] === 0)
+	     && (int) $itemInfos['personal_folder'] === 0)
         ) {
             throw new Exception('Similar item already exists. Duplicates are not allowed.');
         }

sources/folders.class.php

@@ -351,7 +351,7 @@ private function updateUserFolderCache($tree, $title, $parent_id, $isPersonal, $
         if (empty($cache_tree)) {
             DB::insert(prefixTable('cache_tree'), [
                 'user_id' => $user_id,
-                'folders' => json_encode([$newId,]),
+                'folders' => json_encode([$newId]),
                 'visible_folders' => json_encode($new_json),
                 'timestamp' => time(),
                 'data' => '[{}]',