Fix deprecation for symfony/config 4.2+ (#300)

sonata-project · Dec 16, 2018 · abf293b · abf293b
1 parent 4028dd6
commit abf293b
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
@@ -31,8 +31,14 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('sonata_doctrine_mongo_db_admin', 'array');
+        $treeBuilder = new TreeBuilder('sonata_doctrine_mongo_db_admin');
+
+        // Keep compatibility with symfony/config < 4.2
+        if (!\method_exists($treeBuilder, 'getRootNode')) {
+            $rootNode = $treeBuilder->root('sonata_doctrine_mongo_db_admin');
+        } else {
+            $rootNode = $treeBuilder->getRootNode();
+        }
 
         $rootNode
             ->children()