public function add($name, $quantity, $price)
{
$this->validatePermissions();
$productModel = new ProductModel();
$viewModel = new InformationViewModel();
try {
$productModel->add($name, $quantity, $price);
$viewModel->success = "Product {$name} created successfully";
} catch (\Exception $e) {
$viewModel->error = $e->getMessage();
}
return new View($viewModel);
}