fix(symfony): set normalization context in request attributes (#6345)

src/State/Provider/ReadProvider.php

@@ -71,10 +71,11 @@ public function provide(Operation $operation, array $uriVariables = [], array $c
 
         if ($this->serializerContextBuilder && $request) {
             // Builtin data providers are able to use the serialization context to automatically add join clauses
-            $context += $this->serializerContextBuilder->createFromRequest($request, true, [
+            $context += $normalizationContext = $this->serializerContextBuilder->createFromRequest($request, true, [
                 'resource_class' => $operation->getClass(),
                 'operation' => $operation,
             ]);
+            $request->attributes->set('_api_normalization_context', $normalizationContext);
         }
 
         try {

src/State/Tests/Provider/ReadProviderTest.php

@@ -0,0 +1,38 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\State\Tests\Provider;
+
+use ApiPlatform\Metadata\Get;
+use ApiPlatform\Serializer\SerializerContextBuilderInterface;
+use ApiPlatform\State\Provider\ReadProvider;
+use ApiPlatform\State\ProviderInterface;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\Request;
+
+class ReadProviderTest extends TestCase
+{
+    public function testSetsSerializerContext(): void
+    {
+        $data = new \stdClass();
+        $operation = new Get(read: true);
+        $decorated = $this->createStub(ProviderInterface::class);
+        $decorated->method('provide')->willReturn($data);
+        $serializerContextBuilder = $this->createMock(SerializerContextBuilderInterface::class);
+        $serializerContextBuilder->expects($this->once())->method('createFromRequest')->willReturn(['a']);
+        $provider = new ReadProvider($decorated, $serializerContextBuilder);
+        $request = new Request();
+        $provider->provide($operation, ['id' => 1], ['request' => $request]);
+        $this->assertEquals(['a'], $request->attributes->get('_api_normalization_context'));
+    }
+}

src/State/composer.json

@@ -36,7 +36,8 @@
         "symfony/web-link": "^6.4 || ^7.0",
         "symfony/http-foundation": "^6.4 || 7.0",
         "willdurand/negotiation": "^3.1",
-        "api-platform/validator": "*@dev || ^3.1"
+        "api-platform/validator": "*@dev || ^3.1",
+        "api-platform/serializer": "*@dev || ^3.1"
     },
     "autoload": {
         "psr-4": {