Support Flex directory structure for YAML and XML configs

features/main/configurable.feature

@@ -44,7 +44,6 @@ Feature: Configurable resource CRUD
     }
     """
 
-  @dropSchema
   Scenario: Retrieve the ConfigDummy resource
     When I send a "GET" request to "/fileconfigdummies/1"
     Then the response status code should be 200
@@ -61,3 +60,20 @@ Feature: Configurable resource CRUD
       "foo": "Foo"
     }
     """
+
+  @dropSchema
+  Scenario: Entities can be configured using a Flex-like directory structure
+    When I send a "GET" request to "/flex_configs"
+    Then the response status code should be 200
+    And the response should be in JSON
+    And the header "Content-Type" should be equal to "application/ld+json; charset=utf-8"
+    And the JSON should be equal to:
+    """
+    {
+         "@context": "/contexts/FlexConfig",
+         "@id": "/flex_configs",
+         "@type": "hydra:Collection",
+         "hydra:member": [],
+         "hydra:totalItems": 0
+    }
+    """

src/Bridge/Symfony/Bundle/DependencyInjection/ApiPlatformExtension.php

@@ -221,9 +221,9 @@ private function getBundlesResourcesPaths(ContainerBuilder $container): array
             $paths = [];
             $dirname = $bundle['path'];
             foreach (['.yaml', '.yml', '.xml', ''] as $extension) {
-                $paths[] = $dirname.'/Resources/config/api_resources'.$extension;
+                $paths[] = "$dirname/Resources/config/api_resources$extension";
             }
-            $paths[] = $dirname.'/Entity';
+            $paths[] = "$dirname/Entity";
 
             foreach ($paths as $path) {
                 if ($container->fileExists($path, false)) {
@@ -237,6 +237,12 @@ private function getBundlesResourcesPaths(ContainerBuilder $container): array
 
     private function getResourcesToWatch(ContainerBuilder $container, array $resourcesPaths): array
     {
+        // Flex structure
+        $projectDir = $container->getParameter('kernel.project_dir');
+        if (is_dir($dir = "$projectDir/config/api_platform")) {
+            $resourcesPaths[] = $dir;
+        }
+
         $paths = array_unique(array_merge($resourcesPaths, $this->getBundlesResourcesPaths($container)));
         $resources = ['yml' => [], 'xml' => [], 'dir' => []];
 
@@ -248,15 +254,21 @@ private function getResourcesToWatch(ContainerBuilder $container, array $resourc
 
                 $resources['dir'][] = $path;
                 $container->addResource(new DirectoryResource($path, '/\.(xml|ya?ml|php)$/'));
-            } elseif ($container->fileExists($path, false)) {
+
+                continue;
+            }
+
+            if ($container->fileExists($path, false)) {
                 if (!preg_match('/\.(xml|ya?ml)$/', $path, $matches)) {
                     throw new RuntimeException(sprintf('Unsupported mapping type in "%s", supported types are XML & Yaml.', $path));
                 }
 
                 $resources['yaml' === $matches[1] ? 'yml' : $matches[1]][] = $path;
-            } else {
-                throw new RuntimeException(sprintf('Could not open file or directory "%s".', $path));
+
+                continue;
             }
+
+            throw new RuntimeException(sprintf('Could not open file or directory "%s".', $path));
         }
 
         $container->setParameter('api_platform.resource_class_directories', $resources['dir']);

tests/Bridge/Symfony/Bundle/DependencyInjection/ApiPlatformExtensionTest.php

@@ -525,7 +525,9 @@ private function getPartialContainerBuilderProphecy($test = false)
             $containerBuilderProphecy->setAlias($alias, $service)->shouldBeCalled();
         }
 
+        $containerBuilderProphecy->getParameter('kernel.project_dir')->willReturn(__DIR__);
         $containerBuilderProphecy->getParameter('kernel.debug')->willReturn(false);
+
         $containerBuilderProphecy->getDefinition('api_platform.http_cache.purger.varnish')->willReturn(new Definition());
 
         return $containerBuilderProphecy;

tests/Fixtures/TestBundle/Entity/FlexConfig.php

@@ -0,0 +1,36 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <[email protected]>
+ *
+ * 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\Core\Tests\Fixtures\TestBundle\Entity;
+
+use Doctrine\ORM\Mapping as ORM;
+
+/**
+ * This entity is configure in tests/Fixtures/app/config/api_platform/flex.yaml.
+ *
+ * @ORM\Entity
+ */
+class FlexConfig
+{
+    /**
+     * @ORM\Column(type="integer")
+     * @ORM\Id
+     * @ORM\GeneratedValue(strategy="AUTO")
+     */
+    private $id;
+
+    public function getId()
+    {
+        return $this->id;
+    }
+}

tests/Fixtures/app/AppKernel.php

@@ -70,6 +70,7 @@ protected function configureRoutes(RouteCollectionBuilder $routes)
     protected function configureContainer(ContainerBuilder $c, LoaderInterface $loader)
     {
         $environment = $this->getEnvironment();
+        $c->setParameter('kernel.project_dir', __DIR__);
 
         // patch for behat not supporting %env(APP_ENV)% in older versions
         if (($appEnv = $_SERVER['APP_ENV'] ?? 'test') && $appEnv !== $environment) {

tests/Fixtures/app/config/api_platform/flex.yaml

@@ -0,0 +1 @@
+ApiPlatform\Core\Tests\Fixtures\TestBundle\Entity\FlexConfig: ~