Fix deprecation for symfony/config 4.2

lexik · Nov 30, 2018 · ca6d4db · ca6d4db
1 parent a2e30e1
commit ca6d4db
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
@@ -15,8 +15,14 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $treeBuilder->root('lexik_data_layer');
+        $treeBuilder = new TreeBuilder('lexik_data_layer');
+
+        if (!method_exists($treeBuilder, 'getRootNode')) {
+            $rootNode = $treeBuilder->getRootNode();
+        } else {
+            // BC layer for symfony/config 4.1 and older
+            $rootNode = $treeBuilder->root('lexik_data_layer');
+        }
 
         return $treeBuilder;
     }