Optional id

Author: n.gnato

CHANGELOG.md

@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [0.0.7] - 2025-06-26
 
 ### Fixed
-- `attributes` and `relationships` fields optional in resource object, according to jsonapi v1.1#7.2.  
+- `id`, `attributes` and `relationships` fields optional in resource object, according to jsonapi v1.1#7.2.
 
 ## [0.0.6] - 2025-04-05
 

src/FreeElephants/JsonApi/DTO/AbstractResourceObject.php

@@ -15,7 +15,7 @@ class AbstractResourceObject
 
     public function __construct(array $data)
     {
-        $this->id = $data['id'];
+        $this->id = $data['id'] ?? null;
         $this->type = $data['type'];
 
         $concreteClass = new \ReflectionClass($this);

tests/FreeElephants/JsonApi/DTO/ResourceObjectTest.php

@@ -30,6 +30,29 @@ public function testRelationshipTypes()
         $this->assertInstanceOf(Example\OneRelationships::class, $resourceObject->relationships);
         $this->assertSame('one', $resourceObject->relationships->one->data->type);
     }
+
+    public function testWithNullableId(): void
+    {
+        $resourceObject = new class([
+            'type'          => 'type',
+            'attributes'    => [
+                'foo' => 'bar',
+            ],
+            'relationships' => [
+                'one' => [
+                    'data' => [
+                        'type' => 'one',
+                        'id'   => 'one',
+                    ],
+                ],
+            ],
+        ]) extends AbstractResourceObject {
+            public Example\Attributes $attributes;
+            public Example\OneRelationships $relationships;
+        };
+
+        $this->assertNull($resourceObject->id);
+    }
 }
 
 class Attributes extends AbstractAttributes