feat(symfony): Add error classes options to OpenAPI config

src/Symfony/Bundle/DependencyInjection/ApiPlatformExtension.php

@@ -875,6 +875,9 @@ private function registerOpenApiConfiguration(ContainerBuilder $container, array
 
         $container->setParameter('api_platform.openapi.tags', $tags);
 
+        $container->setParameter('api_platform.openapi.errorResourceClass', $config['openapi']['error_resource_class'] ?? null);
+        $container->setParameter('api_platform.openapi.validationErrorResourceClass', $config['openapi']['validation_error_resource_class'] ?? null);
+
         $loader->load('json_schema.xml');
     }
 

src/Symfony/Bundle/DependencyInjection/Configuration.php

@@ -534,7 +534,9 @@ private function addOpenApiSection(ArrayNodeDefinition $rootNode): void
                             ->end()
                             ->info('To pass extra configuration to Swagger UI, like docExpansion or filter.')
                         ->end()
-                        ->booleanNode('overrideResponses')->defaultTrue()->info('Whether API Platform adds automatic responses to the OpenAPI documentation.')
+                        ->booleanNode('overrideResponses')->defaultTrue()->info('Whether API Platform adds automatic responses to the OpenAPI documentation.')->end()
+                        ->scalarNode('error_resource_class')->defaultNull()->info('The class used to represent errors in the OpenAPI documentation.')->end()
+                        ->scalarNode('validation_error_resource_class')->defaultNull()->info('The class used to represent validation errors in the OpenAPI documentation.')->end()
                     ->end()
                 ->end()
             ->end();

src/Symfony/Bundle/Resources/config/openapi.xml

@@ -62,6 +62,8 @@
             <argument>%api_platform.swagger.persist_authorization%</argument>
             <argument>%api_platform.swagger.http_auth%</argument>
             <argument>%api_platform.openapi.tags%</argument>
+            <argument>%api_platform.openapi.errorResourceClass%</argument>
+            <argument>%api_platform.openapi.validationErrorResourceClass%</argument>
             <argument>%api_platform.openapi.license.identifier%</argument>
         </service>
         <service id="ApiPlatform\OpenApi\Options" alias="api_platform.openapi.options" />

tests/Symfony/Bundle/DependencyInjection/ConfigurationTest.php

@@ -221,6 +221,8 @@
                 'swagger_ui_extra_configuration' => [],
                 'overrideResponses' => true,
                 'tags' => [],
+                'error_resource_class' => null,
+                'validation_error_resource_class' => null,
             ],
             'maker' => [
                 'enabled' => true,