api-platform-validation-groups-generator.php

<?php

declare(strict_types=1);

namespace App\Validator;

use Symfony\Component\HttpFoundation\RequestStack;

final class ValidationGroupsGenerator
{
    private $requestStack;

    public function __construct(RequestStack $requestStack)
    {
        $this->requestStack = $requestStack;
    }

    public function __invoke($object): array
    {
        $groups = ['Default'];

        $currentRequest = $this->requestStack->getCurrentRequest();
        $entityName = (new \ReflectionClass($object))->getShortName();
        $entitySlug = strtolower(preg_replace('/[A-Z]/', '-\\0', lcfirst($entityName)));
        $operationName = $currentRequest->attributes->get('_api_item_operation_name')
            ?? $currentRequest->attributes->get('_api_collection_operation_name');

        /* Generate entity validation group "entity:operationName" (ex: account:post) */
        $groups[] = sprintf('%s:%s', $entitySlug, $operationName);

        return $groups;
    }
}