Fix deprecate TreeBuilder::root

A tree builder without a root node is deprecated since Symfony 4.2 and is not supported anymore in 5.0.
ScullWM · Oct 22, 2021 · a2d4b9d · a2d4b9d
1 parent 75fabcc
commit a2d4b9d
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
@@ -18,8 +18,12 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('swm_mailhook');
+        $treeBuilder = new TreeBuilder('swm_mailhook');
+        if (method_exists($treeBuilder, 'getRootNode')) {
+            $rootNode = $treeBuilder->getRootNode();
+        } else {
+            $rootNode = $treeBuilder->root('swm_mailhook');
+        }
 
         $this->addConfig($rootNode);