fixed deprecation message of treebuilder (#51)

* fixed deprecation message of treebuilder * keep compability with symfony/config < 4.2
silasjoisten · Jan 19, 2019 · ed50b83 · ed50b83
1 parent 0f9999b
commit ed50b83
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
@@ -12,8 +12,14 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('sonata_multi_upload');
+        $treeBuilder = new TreeBuilder('sonata_multi_upload');
+
+        // Keep compatibility with symfony/config < 4.2
+        if (!method_exists($treeBuilder, 'getRootNode')) {
+            $rootNode = $treeBuilder->root('sonata_admin');
+        } else {
+            $rootNode = $treeBuilder->getRootNode();
+        }
 
         $rootNode
             ->children()