Merge pull request #238 from saimaz/child-definition-patch

Added bc support for DefinitionDecorator

Author: saimaz

DependencyInjection/Compiler/FilterPass.php

@@ -17,6 +17,7 @@
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\DefinitionDecorator;
 use Symfony\Component\DependencyInjection\Reference;
 
 /**
@@ -49,7 +50,11 @@ public function process(ContainerBuilder $container)
                 );
             }
 
-            $definition = new ChildDefinition($filters[($filterOptions['type'])]);
+            if (class_exists('Symfony\Component\DependencyInjection\ChildDefinition')) {
+                $definition = new ChildDefinition($filters[($filterOptions['type'])]);
+            } else {
+                $definition = new DefinitionDecorator($filters[($filterOptions['type'])]);
+            }
             $definition->addMethodCall('setRequestField', [$filterOptions['request_field']]);
             $definition->addMethodCall('setDocumentField', [$filterOptions['document_field']]);
             $definition->addMethodCall('setTags', [$filterOptions['tags']]);