Allow different methods of batching

Controller/GraphController.php

@@ -60,6 +60,7 @@ private function createResponse(Request $request, $schemaName, $batched)
     private function processBatchQuery(Request $request, $schemaName = null)
     {
         $queries = $this->get('overblog_graphql.request_batch_parser')->parse($request);
+        $apolloBatching = 'apollo' === $this->getParameter('overblog_graphql.batching_method');
         $payloads = [];
 
         foreach ($queries as $query) {
@@ -71,7 +72,7 @@ private function processBatchQuery(Request $request, $schemaName = null)
                 [],
                 $schemaName
             );
-            $payloads[] = ['id' => $query['id'], 'payload' => $payloadResult->toArray()];
+            $payloads[] = $apolloBatching ? $payloadResult->toArray() : ['id' => $query['id'], 'payload' => $payloadResult->toArray()];
         }
 
         return $payloads;

DependencyInjection/Configuration.php

@@ -38,6 +38,10 @@ public function getConfigTreeBuilder()
 
         $rootNode
             ->children()
+                ->enumNode('batching_method')
+                    ->values(['relay', 'apollo'])
+                    ->defaultValue('relay')
+                ->end()
                 ->arrayNode('definitions')
                     ->addDefaultsIfNotSet()
                     ->children()

DependencyInjection/OverblogGraphQLExtension.php

@@ -34,6 +34,7 @@ public function load(array $configs, ContainerBuilder $container)
 
         $config = $this->treatConfigs($configs, $container);
 
+        $this->setBatchingMethod($config, $container);
         $this->setExpressionLanguageDefaultParser($container);
         $this->setServicesAliases($config, $container);
         $this->setSchemaBuilderArguments($config, $container);
@@ -76,6 +77,11 @@ private function setAutoMappingParameters(array $config, ContainerBuilder $conta
         $container->setParameter($this->getAlias().'.auto_mapping.directories', $config['definitions']['auto_mapping']['directories']);
     }
 
+    private function setBatchingMethod(array $config, ContainerBuilder $container)
+    {
+        $container->setParameter($this->getAlias().'.batching_method', $config['batching_method']);
+    }
+
     private function setExpressionLanguageDefaultParser(ContainerBuilder $container)
     {
         $class = version_compare(Kernel::VERSION, '3.2.0', '>=') ? ArrayAdapter::class : ArrayParserCache::class;

Resources/doc/data-fetching/batching.md

@@ -0,0 +1,19 @@
+# Query batching
+
+The bundle supports batching using [ReactRelayNetworkLayer](https://github.com/nodkz/react-relay-network-layer) or [Apollo GraphQL](http://dev.apollodata.com/core/network.html#query-batching) directly.
+To use batching, you must use "/batch" as a suffix to your graphql endpoint (see routing config). 
+Then you can switch between implementations in your configuration like so:
+
+For Relay (default value):
+```yaml
+overblog_graphql:
+    batching_method: "relay"
+```
+
+For Apollo:
+```yaml
+overblog_graphql:
+    batching_method: "apollo"
+```
+
+Done!

Resources/doc/data-fetching/index.md

@@ -1,6 +1,7 @@
 Data fetching
 =============
 
+* [Batching](batching.md)
 * [Promise](promise.md)
 
 Next step [secure your server](../security/index.md).

Resources/doc/index.md

@@ -3,7 +3,7 @@ OverblogGraphQLBundle
 
 This Symfony 2 / 3 bundle provide integration [GraphQL](https://facebook.github.io/graphql/) using [webonyx/graphql-php](https://github.com/webonyx/graphql-php)
 and [GraphQL Relay](https://facebook.github.io/relay/docs/graphql-relay-specification.html).
-It also supports batching using libs like [ReactRelayNetworkLayer](https://github.com/nodkz/react-relay-network-layer).
+It also supports batching using libs like [ReactRelayNetworkLayer](https://github.com/nodkz/react-relay-network-layer) or [Apollo GraphQL](http://dev.apollodata.com/core/network.html#query-batching).
 
 Requirements
 ------------
@@ -54,4 +54,4 @@ overblog_graphql_graphiql:
     resource: "@OverblogGraphQLBundle/Resources/config/routing/graphiql.yml"
 ```
 
-Now you can define your [graphQL schema](definitions/index.md).
+Now you can define your [graphQL schema](definitions/index.md).