[Tree] The value of path source property is cast to string type for Materialized Path Tree strategy

Author: kosarinin

CHANGELOG.md

@@ -19,6 +19,9 @@ a release.
 ---
 
 ## [Unreleased]
+### Tree
+### Fixed
+- The value of path source property is cast to string type for Materialized Path Tree strategy (#2061)
 
 ## [2.4.38] - 2019-11-08
 ### Global / Shared

lib/Gedmo/Tree/Strategy/AbstractMaterializedPath.php

@@ -244,7 +244,7 @@ public function updateNode(ObjectManager $om, $node, AdapterInterface $ea)
         $pathProp->setAccessible(true);
         $pathSourceProp = $meta->getReflectionProperty($config['path_source']);
         $pathSourceProp->setAccessible(true);
-        $path = $pathSourceProp->getValue($node);
+        $path = (string) $pathSourceProp->getValue($node);
 
         // We need to avoid the presence of the path separator in the path source
         if (strpos($path, $config['path_separator']) !== false) {