Fix: Deprecation: A tree builder without a root node is deprecated si…

…nce symfony 4.2 (#1457) * Fix: Deprecation: A tree builder without a root node is deprecated since Symfony 4.2 and will not be supported anymore in 5.0. * Fix: Deprecation: A tree builder without a root node is deprecated since Symfony 4.2 and will not be supported anymore in 5.0.
nelmio · Mar 15, 2021 · b54c493 · b54c493
1 parent 2b39523
commit b54c493
Showing 1 changed file with 10 additions and 3 deletions.
diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
@@ -18,9 +18,16 @@ class Configuration implements ConfigurationInterface
 {
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $treeBuilder
-            ->root('nelmio_api_doc')
+        $treeBuilder = new TreeBuilder('nelmio_api_doc');
+
+        if (method_exists($treeBuilder, 'getRootNode')) {
+            $rootNode = $treeBuilder->getRootNode();
+        } else {
+            // symfony < 4.2 support
+            $rootNode = $treeBuilder->root('nelmio_api_doc');
+        }
+
+        $rootNode
             ->children()
                 ->scalarNode('name')->defaultValue('API documentation')->end()
                 ->arrayNode('exclude_sections')