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<?php declare(strict_types=1);
namespace Shopware\Core\System\Currency;
use Shopware\Core\Defaults;
use Shopware\Core\Framework\DataAbstractionLayer\Write\Command\DeleteCommand;
use Shopware\Core\Framework\DataAbstractionLayer\Write\Validation\PreWriteValidationEvent;
use Shopware\Core\Framework\Uuid\Uuid;
use Shopware\Core\Framework\Validation\WriteConstraintViolationException;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Validator\ConstraintViolation;
use Symfony\Component\Validator\ConstraintViolationList;
class CurrencyValidator implements EventSubscriberInterface
{
public const VIOLATION_DELETE_DEFAULT_CURRENCY = 'delete_default_currency_violation';
public const DEFAULT_CURRENCIES = [Defaults::CURRENCY];
public static function getSubscribedEvents(): array
{
return [
PreWriteValidationEvent::class => 'preValidate',
];
}
public function preValidate(PreWriteValidationEvent $event): void
{
$commands = $event->getCommands();
$violations = new ConstraintViolationList();
foreach ($commands as $command) {
if (!($command instanceof DeleteCommand) || $command->getDefinition()->getClass() !== CurrencyDefinition::class) {
continue;
}
$pk = $command->getPrimaryKey();
$id = mb_strtolower(Uuid::fromBytesToHex($pk['id']));
if ($id !== Defaults::CURRENCY) {
continue;
}
$msgTpl = 'The default currency {{ id }} cannot be deleted.';
$parameters = ['{{ id }}' => $id];
$msg = sprintf('The default currency %s cannot be deleted.', $id);
$violation = new ConstraintViolation(
$msg,
$msgTpl,
$parameters,
null,
'/' . $id,
$id,
null,
self::VIOLATION_DELETE_DEFAULT_CURRENCY
);
$violations->add($violation);
}
if ($violations->count() > 0) {
$event->getExceptions()->add(new WriteConstraintViolationException($violations));
}
}
}

vendor/shopware/core/System/Currency/CurrencyValidator.php line 27