I am trying to add a product to cart with a customizable option. I can add simple products, but I have not successfully been able to add a product with an option. The product will eventually be added dynamically but I just want a hard coded example right now to build off of.

Custom options are: enter image description here

I would prefer just a simple objectManager example that will work in a phtml file to keep things simple and straight forward. But I will appreciate/accept any answer that works.

My current code:

$productId = 4;
$obj = \Magento\Framework\App\ObjectManager::getInstance();
$product = $viewModel->getLoadProduct($productId);
$cart = $obj->create('Magento\Checkout\Model\Cart');    
$params = array();      
$params['qty'] = 10;
$params['product'] = $productId;
$options = array();
$options['title'] = 'Rustic';
$params['options'] = $options;
$cart->addProduct($product, $params);

I get this error:

Exception #0 (Magento\Framework\Exception\LocalizedException): The product's required option(s) weren't entered. Make sure the options are entered and try again.
  • 1
    Have you tried adding the $params['title'] = ID of the option, instead of the label? Nov 7, 2021 at 22:46
  • This is what was needed: $params[$optionTypeId] = $optionId; // 2 and 3 in my case Nov 9, 2021 at 3:23

1 Answer 1



$options['title'] = 'Rustic';


Hard Coded:

$options[2] = 3;


$options[$optionTypeId] = $optionId;

The key: 2 is the optionTypeId.

The val: 3 is the optionId.

Accessible by loading product by Id, ex:

$loadedProduct = $viewModel->getLoadProduct($loadedProductId);
foreach ($loadedProduct->getOptions() as $options) {
            $optionData = $options->getValues();
            foreach ($optionData as $data) {
                $customizableOptions = $data->getData();

You can also add the product to the cart and Inspect the Form Data Headers to see the option ID's:

enter image description here

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