allow to ignore properties during serialization

Author: mtarld

src/Symfony/Component/SerDes/Hook/Serialize/PropertyHookInterface.php

@@ -21,7 +21,7 @@ interface PropertyHookInterface
     /**
      * @param array<string, mixed> $context
      *
-     * @return array{name?: string, type?: string, accessor?: string, context?: array<string, mixed>}
+     * @return array{name?: string, type?: string, accessor?: string|null, context?: array<string, mixed>}
      */
     public function __invoke(\ReflectionProperty $property, string $accessor, array $context): array;
 }

src/Symfony/Component/SerDes/Internal/Serialize/TemplateGenerator.php

@@ -249,6 +249,10 @@ private function objectNodes(Type $type, NodeInterface $accessor, array $context
             if (null !== $hook) {
                 $hookResult = $hook($property, (new Compiler())->compile($propertyAccessor)->source(), $context);
 
+                if (\array_key_exists('accessor', $hookResult) && null === $hookResult['accessor']) {
+                    continue;
+                }
+
                 $propertyName = $hookResult['name'] ?? $propertyName;
                 $propertyType = $hookResult['type'] ?? $propertyType;
                 $propertyAccessor = isset($hookResult['accessor']) ? new RawNode($hookResult['accessor']) : $propertyAccessor;

src/Symfony/Component/SerDes/Tests/Internal/Serialize/Json/SerializeGenerateTest.php

@@ -321,5 +321,33 @@ public static function serializeGenerateDataProvider(): iterable
                 ],
             ],
         ];
+
+        yield [
+            <<<PHP
+            <?php
+
+            /**
+             * @param Symfony\Component\SerDes\Tests\Fixtures\Dto\ClassicDummy \$data
+             * @param resource \$resource
+             */
+            return static function (mixed \$data, mixed \$resource, array \$context): void {
+                \$object_0 = \$data;
+                \\fwrite(\$resource, "{\"name\":");
+                \\fwrite(\$resource, \json_encode(\$object_0->name, \$context["json_encode_flags"] ?? 0));
+                \\fwrite(\$resource, "}");
+            };
+
+            PHP, ClassicDummy::class, [
+                'hooks' => [
+                    'serialize' => [
+                        sprintf('%s::$id', ClassicDummy::class) => static function (\ReflectionProperty $property, string $accessor, array $context): array {
+                            return [
+                                'accessor' => null,
+                            ];
+                        },
+                    ],
+                ],
+            ],
+        ];
     }
 }