fix(laravel): remove link header when jsonld is not enabled

src/Laravel/ApiPlatformProvider.php

@@ -529,6 +529,14 @@ public function register(): void
             return new CallableProcessor(new ServiceLocator($tagged));
         });
 
+        $this->app->singleton(RespondProcessor::class, function () {
+            return new AddLinkHeaderProcessor(new RespondProcessor(), new HttpHeaderSerializer());
+        });
+
+        $this->app->singleton(SerializeProcessor::class, function (Application $app) {
+            return new SerializeProcessor($app->make(RespondProcessor::class), $app->make(Serializer::class), $app->make(SerializerContextBuilderInterface::class));
+        });
+
         $this->app->singleton(WriteProcessor::class, function (Application $app) {
             return new WriteProcessor($app->make(SerializeProcessor::class), $app->make(CallableProcessor::class));
         });
@@ -547,19 +555,18 @@ public function register(): void
             );
         });
 
-        $this->app->singleton(SerializeProcessor::class, function (Application $app) {
-            return new SerializeProcessor($app->make(RespondProcessor::class), $app->make(Serializer::class), $app->make(SerializerContextBuilderInterface::class));
-        });
-
         $this->app->singleton(HydraLinkProcessor::class, function (Application $app) {
             return new HydraLinkProcessor($app->make(WriteProcessor::class), $app->make(UrlGeneratorInterface::class));
         });
 
-        $this->app->singleton(RespondProcessor::class, function () {
-            return new AddLinkHeaderProcessor(new RespondProcessor(), new HttpHeaderSerializer());
-        });
+        $this->app->bind(ProcessorInterface::class, function (Application $app) {
+            $config = $app['config'];
+            if ($config->has('api-platform.formats.jsonld')) {
+                return $app->make(HydraLinkProcessor::class);
+            }
 
-        $this->app->bind(ProcessorInterface::class, HydraLinkProcessor::class);
+            return $app->make(WriteProcessor::class);
+        });
 
         $this->app->singleton(ObjectNormalizer::class, function (Application $app) {
             $config = $app['config'];

src/Laravel/Tests/LinkHeaderTest.php

@@ -0,0 +1,45 @@
+<?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);
+
+use ApiPlatform\Laravel\Test\ApiTestAssertionsTrait;
+use Illuminate\Contracts\Config\Repository;
+use Illuminate\Foundation\Application;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Orchestra\Testbench\Concerns\WithWorkbench;
+use Orchestra\Testbench\TestCase;
+
+class LinkHeaderTest extends TestCase
+{
+    use ApiTestAssertionsTrait;
+    use RefreshDatabase;
+    use WithWorkbench;
+
+    /**
+     * @param Application $app
+     */
+    protected function defineEnvironment($app): void
+    {
+        tap($app['config'], function (Repository $config): void {
+            $config->set('app.debug', true);
+            $config->set('api-platform.formats', ['jsonld' => ['application/ld+json']]);
+            $config->set('api-platform.docs_formats', ['jsonld' => ['application/ld+json']]);
+        });
+    }
+
+    public function testLinkHeader(): void
+    {
+        $response = $this->get('/api/', ['accept' => ['application/ld+json']]);
+        $response->assertStatus(200);
+        $response->assertHeader('link', '<http://localhost/api/docs.jsonld>; rel="http://www.w3.org/ns/hydra/core#apiDocumentation"');
+    }
+}

src/Laravel/Tests/LinkHeaderWithoutJsonldTest.php

@@ -0,0 +1,45 @@
+<?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);
+
+use ApiPlatform\Laravel\Test\ApiTestAssertionsTrait;
+use Illuminate\Contracts\Config\Repository;
+use Illuminate\Foundation\Application;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Orchestra\Testbench\Concerns\WithWorkbench;
+use Orchestra\Testbench\TestCase;
+
+class LinkHeaderWithoutJsonldTest extends TestCase
+{
+    use ApiTestAssertionsTrait;
+    use RefreshDatabase;
+    use WithWorkbench;
+
+    /**
+     * @param Application $app
+     */
+    protected function defineEnvironment($app): void
+    {
+        tap($app['config'], function (Repository $config): void {
+            $config->set('app.debug', true);
+            $config->set('api-platform.formats', ['jsonapi' => ['application/vnd.api+json']]);
+            $config->set('api-platform.docs_formats', ['jsonapi' => ['application/vnd.api+json']]);
+        });
+    }
+
+    public function testLinkHeader(): void
+    {
+        $response = $this->get('/api/', ['accept' => ['application/vnd.api+json']]);
+        $response->assertStatus(200);
+        $response->assertHeaderMissing('link');
+    }
+}