fix(state): object mapper with input different

src/State/Processor/ObjectMapperProcessor.php

@@ -35,11 +35,12 @@ public function __construct(
 
     public function process(mixed $data, Operation $operation, array $uriVariables = [], array $context = []): object|array|null
     {
-        if (!$this->objectMapper || !$operation->canWrite()) {
-            return $this->decorated->process($data, $operation, $uriVariables, $context);
-        }
-
-        if (!(new \ReflectionClass($operation->getClass()))->getAttributes(Map::class)) {
+        if (
+            !$this->objectMapper
+            || !$operation->canWrite()
+            || !is_a($data, $operation->getClass(), true)
+            || !(new \ReflectionClass($operation->getClass()))->getAttributes(Map::class)
+        ) {
             return $this->decorated->process($data, $operation, $uriVariables, $context);
         }
 

tests/Fixtures/TestBundle/ApiResource/MappedResourceWithInput.php

@@ -0,0 +1,46 @@
+<?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\Tests\Fixtures\TestBundle\ApiResource;
+
+use ApiPlatform\Doctrine\Orm\State\Options;
+use ApiPlatform\JsonLd\ContextBuilder;
+use ApiPlatform\Metadata\Operation;
+use ApiPlatform\Metadata\Post;
+use ApiPlatform\Tests\Fixtures\TestBundle\Dto\MappedResouceInput;
+use ApiPlatform\Tests\Fixtures\TestBundle\Entity\MappedEntity;
+use Symfony\Component\ObjectMapper\Attribute\Map;
+
+#[Post(
+    uriTemplate: '/mapped_resource_with_input',
+    input: MappedResouceInput::class,
+    stateOptions: new Options(entityClass: MappedEntity::class),
+    normalizationContext: [ContextBuilder::HYDRA_CONTEXT_HAS_PREFIX => false],
+    processor: [self::class, 'process']
+)]
+#[Map(target: MappedEntity::class)]
+final class MappedResourceWithInput
+{
+    #[Map(if: false)]
+    public ?string $id = null;
+    public string $username;
+
+    public static function process(mixed $data, Operation $operation, array $uriVariables = [], array $context = [])
+    {
+        $s = new self();
+        $s->id = $data->id;
+        $s->username = $data->name;
+
+        return $s;
+    }
+}

tests/Fixtures/TestBundle/Dto/MappedResouceInput.php

@@ -0,0 +1,20 @@
+<?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\Tests\Fixtures\TestBundle\Dto;
+
+class MappedResouceInput
+{
+    public string $id;
+    public string $name;
+}

tests/Functional/MappingTest.php

@@ -17,6 +17,7 @@
 use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\FirstResource;
 use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\MappedResource;
 use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\MappedResourceOdm;
+use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\MappedResourceWithInput;
 use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\MappedResourceWithRelation;
 use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\MappedResourceWithRelationRelated;
 use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\SecondResource;
@@ -40,7 +41,15 @@ final class MappingTest extends ApiTestCase
      */
     public static function getResources(): array
     {
-        return [MappedResource::class, MappedResourceOdm::class, FirstResource::class, SecondResource::class, MappedResourceWithRelation::class, MappedResourceWithRelationRelated::class];
+        return [
+            MappedResource::class,
+            MappedResourceOdm::class,
+            FirstResource::class,
+            SecondResource::class,
+            MappedResourceWithRelation::class,
+            MappedResourceWithRelationRelated::class,
+            MappedResourceWithInput::class,
+        ];
     }
 
     public function testShouldMapBetweenResourceAndEntity(): void
@@ -136,6 +145,28 @@ public function testMapPutAllowCreate(): void
         ]);
     }
 
+    public function testShouldNotMapWhenInput(): void
+    {
+        if (!$this->getContainer()->has('api_platform.object_mapper')) {
+            $this->markTestSkipped('ObjectMapper not installed');
+        }
+
+        if ($this->isMongoDB()) {
+            $this->markTestSkipped('MongoDB not tested');
+        }
+
+        $this->recreateSchema([MappedEntity::class]);
+        $this->loadFixtures();
+        $r = self::createClient()->request('POST', 'mapped_resource_with_input', [
+            'headers' => [
+                'content-type' => 'application/ld+json',
+            ],
+            'json' => ['name' => 'test', 'id' => '1'],
+        ]);
+
+        $this->assertJsonContains(['username' => 'test']);
+    }
+
     private function loadFixtures(): void
     {
         $manager = $this->getManager();