public async Task <IActionResult> DeleteConfirmed(int?id)
{
if (id == null)
{
return(BadRequest());
}
await _variantRepository.DeleteVariant(id.Value);
await _variantRepository.SaveChanges();
if (id.Value == VariantViewModel.ActiveVariantId)
{
VariantViewModel.ActiveVariantId = null;
}
return(RedirectToAction(nameof(Index)));
}