How to Add Product to Cart Programmatically With Custom Options in Magento 2

Earlier, I showed you How to Add Magento 2 Configurable Products Programmatically to Cart

Now, what if you are required to add product to cart programmatically with custom options in Magento 2 ?

Crazy business requirements, isn’t it? 😰

I get you, fellow developers 😄

Moreover, this solution can also be helpful if you want an automatic “add to cart” functionality for the configurable product with custom options. For example, the store is offering a free product with a particular product, attach a warranty, or add a gift product!

But what if such products you are adding to the Magento 2 cart are the configurable product! And, if that was not enough, they have custom options too! It can be a bit tricky.

Create registration.php file in app\code\[Vendor]\[Namespace]\

<?php
    \Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    '[Vendor]_[Namespace]',
    __DIR__
 );

<?php

\Magento\Framework\Component\ComponentRegistrar::register(

\Magento\Framework\Component\ComponentRegistrar::MODULE,

'[Vendor]_[Namespace]',

__DIR__

);

Create module.xml file in app\code\[Vendor]\[Namespace]\etc

<?xml version="1.0"?>
 	<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 			xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
 	<module name="[Vendor]_[Namespace]" setup_version="1.0.0"/>
</config>

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">

</config>

Here’s the solution for the same:

<?php
 
namespace [Vendor]\[namespace]\Helper;
 
use Magento\Framework\App\Helper\AbstractHelper;
use Magento\Framework\App\Helper\Context;
use Magento\Checkout\Model\Cart;
use Magento\Catalog\Model\ProductFactory;
 
class Data extends AbstractHelper
{
    private $cart;
    private $productFactory;
    
    public function __construct(Context $context, Cart $cart, ProductFactory $productFactory)
    {
 
        $this->productFactory = $productFactory;
        $this->cart = $cart;
        parent::__construct($context);
 
    }
 
    public function getAddCustomProduct($productId)
    {
        $product = $this->productFactory->load($productId);
 
        $cart = $this->cart;
 
        $params = array();
        $options = array();
        $params['qty'] = 1;
        $params['product'] = $productId;
 
        foreach ($product->getOptions() as $o) {
            foreach ($o->getValues() as $value) {
                $options[$value['option_id']] = $value['option_type_id'];
 
            }
        }
        $params['options'] = $options;
        $cart->addProduct($product, $params);
        $cart->save();
 
 
    }
}