Installing the bundle without Doctrine causes an error

[maitre-hibou]

Hello there,

I'm trying to install the bundle on a Symfony 6.4 project.

Following the documentation, I would like to install oauth2-server-bundle with a custom persistence layer as I do not want to use Doctrine. However, when I ran the command :

composer require league/oauth2-server-bundle

I get the following error :

!!  Symfony\Component\ErrorHandler\Error\ClassNotFoundError {#322
!!    #message: """
!!      Attempted to load class "DoctrineOrmMappingsPass" from namespace "Doctrine\Bundle\DoctrineBundle\DependencyInjection\Compiler".\n
!!      Did you forget a "use" statement for another namespace?
!!      """
!!    #code: 0
!!    #file: "./vendor/league/oauth2-server-bundle/src/LeagueOAuth2ServerBundle.php"
!!    #line: 47
!!    trace: {
!!      ./vendor/league/oauth2-server-bundle/src/LeagueOAuth2ServerBundle.php:47 { …}
!!      ./vendor/league/oauth2-server-bundle/src/LeagueOAuth2ServerBundle.php:27 { …}
!!      ./vendor/symfony/http-kernel/Kernel.php:643 { …}
!!      ./vendor/symfony/http-kernel/Kernel.php:616 { …}
!!      ./vendor/symfony/http-kernel/Kernel.php:506 { …}
!!      ./vendor/symfony/http-kernel/Kernel.php:772 { …}
!!      ./vendor/symfony/http-kernel/Kernel.php:126 { …}
!!      ./vendor/symfony/framework-bundle/Console/Application.php:190 { …}
!!      ./vendor/symfony/framework-bundle/Console/Application.php:72 { …}
!!      ./vendor/symfony/console/Application.php:175 { …}
!!      ./vendor/symfony/runtime/Runner/Symfony/ConsoleApplicationRunner.php:49 { …}
!!      ./vendor/autoload_runtime.php:29 { …}
!!      ./bin/console:15 {
!!        ›
!!        › require_once dirname(__DIR__).'/vendor/autoload_runtime.php';
!!        ›
!!        arguments: {
!!          "/home/xpr/Code/api/vendor/autoload_runtime.php"
!!        }
!!      }
!!    }
!!  }
!!  2025-09-01T13:48:01+00:00 [critical] Uncaught Error: Class "Doctrine\Bundle\DoctrineBundle\DependencyInjection\Compiler\DoctrineOrmMappingsPass" not found

I tried to look at the bundle and it seems that it assumes that doctrine is enabled by default :

// vendor/league/oauth2-server-bundle/src/LeagueOAuth2ServerBundle.php

public function build(ContainerBuilder $container)
{
    parent::build($container);

    $this->configureDoctrineExtension($container);
    $this->configureSecurityExtension($container);
}

//...

private function configureDoctrineExtension(ContainerBuilder $container): void
{
    $container->addCompilerPass(
        new DoctrineOrmMappingsPass(
            new Reference(Driver::class),
            ['League\Bundle\OAuth2ServerBundle\Model'],
            ['league.oauth2_server.persistence.doctrine.manager'],
            'league.oauth2_server.persistence.doctrine.enabled'
        )
    );

    $container->addCompilerPass(new EncryptionKeyPass());
}

Digging more, I also found that the bundle assumes Doctrine is installed when the configuration league_oauth2_server.persistence.doctrine is set (this is the default).

// vendor/league/oauth2-server-bundle/src/DependencyInjection/LeagueOAuth2ServerExtension.php

private function assertRequiredBundlesAreEnabled(ContainerBuilder $container): void
{
    $requiredBundles = [
        'security' => SecurityBundle::class,
    ];

    if ($container->hasParameter('league.oauth2_server.persistence.doctrine.enabled')) {
        $requiredBundles['doctrine'] = DoctrineBundle::class;
    }

    foreach ($requiredBundles as $bundleAlias => $requiredBundle) {
        if (!$container->hasExtension($bundleAlias)) {
            throw new \LogicException(\sprintf('Bundle \'%s\' needs to be enabled in your application kernel.', $requiredBundle));
        }
    }
}

What should I do next ? Anyone already had this issue ?

Thanks !

[maitre-hibou]

OK found that a PR is already open here #246

Thanks !