inject entityPath into ContentType

Author: usu

api/config/services.yaml

@@ -84,6 +84,12 @@ services:
     App\Serializer\Normalizer\CircularReferenceDetectingHalItemNormalizer:
         decorates: 'api_platform.hal.normalizer.item'
 
+    App\Serializer\Normalizer\ContentTypeNormalizer:
+        decorates: 'api_platform.hal.normalizer.item'
+        arguments:
+            - '@.inner'
+            - '@api_platform.route_name_resolver'
+
     App\Serializer\Normalizer\UriTemplateNormalizer:
         decorates: 'api_platform.hal.normalizer.entrypoint'
 

api/src/Entity/ContentType.php

@@ -46,6 +46,7 @@ class ContentType extends BaseEntity {
      * @ORM\Column(type="text")
      */
     #[ApiProperty(writable: false)]
+    #[Groups(['read'])]
     public ?string $entityClass = null;
 
     /**
@@ -56,4 +57,12 @@ class ContentType extends BaseEntity {
      */
     #[ApiProperty(writable: false)]
     public ?array $jsonConfig = [];
+
+    /**
+     * API endpoint path for creating new entities of type entityClass.
+     */
+    #[Groups(['read'])]
+    public function getEntityPath(): string {
+        return ''; // empty here; actual content of this property is filled/decorated in ContentTypeNormalizer
+    }
 }

api/src/Serializer/Normalizer/ContentTypeNormalizer.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Serializer\Normalizer;
+
+use ApiPlatform\Core\Api\OperationType;
+use ApiPlatform\Core\Api\UrlGeneratorInterface;
+use ApiPlatform\Core\Bridge\Symfony\Routing\RouteNameResolverInterface;
+use App\Entity\ContentType;
+use Symfony\Component\Routing\RouterInterface;
+use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
+use Symfony\Component\Serializer\SerializerAwareInterface;
+use Symfony\Component\Serializer\SerializerInterface;
+
+/**
+ * ...
+ */
+class ContentTypeNormalizer implements NormalizerInterface, SerializerAwareInterface {
+    public function __construct(
+        private NormalizerInterface $decorated,
+        private RouteNameResolverInterface $routeNameResolver,
+        private RouterInterface $router,
+    ) {
+    }
+
+    public function supportsNormalization($data, $format = null) {
+        return $this->decorated->supportsNormalization($data, $format);
+    }
+
+    public function normalize($object, $format = null, array $context = []) {
+        $data = $this->decorated->normalize($object, $format, $context);
+
+        if ($object instanceof ContentType && isset($data['entityClass'])) {
+            $data['entityPath'] = $this->router->generate($this->routeNameResolver->getRouteName($data['entityClass'], OperationType::COLLECTION), [], UrlGeneratorInterface::ABS_PATH);
+        }
+
+        return $data;
+    }
+
+    public function setSerializer(SerializerInterface $serializer) {
+        if ($this->decorated instanceof SerializerAwareInterface) {
+            $this->decorated->setSerializer($serializer);
+        }
+    }
+}