I have created one virtual product in my Magento2 website. Now, I want to add it programmatically to the existing customer orders on some occasions with its custom price and name.

Can someone please guide step by step to achieve this?


2 Answers 2


After some goggling and with the help of some core modules I came up with following solution :

* @var \Magento\Sales\Api\OrderRepositoryInterface
protected $orderRepository;

* @var \Magento\Catalog\Api\ProductRepositoryInterface
protected $productRepository;

* @var \Magento\Quote\Api\Data\CartItemInterfaceFactory
protected $cartItemFactory;

* @var \Magento\Quote\Api\CartRepositoryInterface
protected $quoteRepository;

* @var \Magento\Sales\Model\Order\ItemFactory
protected $orderItemFactory;

 public function __construct(
    \Magento\Backend\App\Action\Context $context,        
    \Magento\Sales\Api\OrderRepositoryInterface $orderRepository,
    \Magento\Catalog\Api\ProductRepositoryInterface $productRepository,
    \Magento\Quote\Api\Data\CartItemInterfaceFactory $cartItemFactory,
    \Magento\Quote\Api\CartRepositoryInterface $quoteRepository,
    \Magento\Sales\Model\Order\ItemFactory $orderItemFactory
) {
    $this->productRepository    = $productRepository;
    $this->orderRepository      = $orderRepository;
    $this->cartItemFactory      = $cartItemFactory;
    $this->quoteRepository      = $quoteRepository;
    $this->orderItemFactory     = $orderItemFactory;

public function execute()
    $postData       = $this->getRequest()->getPostValue();
    $productSku     = 'your-product-sku'; // Static Virtual Product created. You may also use static ID.
    $product        = $this->productRepository->get($productSku);
    $order          = $this->orderRepository->get($postData['order_id']);
    $quote          = $this->quoteRepository->get($order->getQuoteId());

    try {
    /* Add Quote Item Start */
    $quoteItem = $this->cartItemFactory->create();
    /* Add Quote Item End */

    /* Add Order Item Start */
    $orderItem = $this->orderItemFactory->create();
    /* Add Order Item End */

    /* Update relavant order totals Start */
    $order->setBaseGrandTotal($order->getBaseGrandTotal() + $postData['custom_price']);
    $order->setGrandTotal($order->getGrandTotal() + $postData['custom_price']);
    $order->setBaseSubtotal($order->getBaseSubtotal() + $postData['custom_price']);
    $order->setSubtotal($order->getSubtotal() + $postData['custom_price']);
    $order->setBaseSubtotalInclTax($order->getBaseSubtotalInclTax() + $postData['custom_price']);
    $order->setSubtotalInclTax($order->getSubtotalInclTax() + $postData['custom_price']);
    $order->setTotalItemCount($order->getTotalItemCount() + 1);
    $order->setTotalQtyOrdered($order->getTotalQtyOrdered() + 1);
    /* Update relavant order totals End */
  catch (\Exception $e) {
  • This seems to be working fine. However, I stumbled on an error when trying to renew an order with an item added through this process. The error occurs in Magento\Checkout\Model\Cart.php l:280. Our programmatically added item does not have the option 'info_buyRequest'. I managed to fix it by setting $info to an empty array when the option is missing, in a preference.
    – Badong
    Oct 30, 2020 at 12:14
  • @Badong I face the same issue. could you please provide a solution for this? Also in my case, Newly added item hasn't included in orderFetch API via rest Jan 4 at 12:45
  • It seems the order status has been changed automatically from pending to processing. Anyone knows the solution? Jan 5 at 10:30

As per as, Magento you cannot add a new item to an order after that order is placed before. You must have to add your item before it cart has been placed.

  • Hello @Amit, Many a times you will get these type of requirements in which you need to add virtual product to get some kind of additional fee into your order with custom price. I think this can be possible with custom programming. Oct 8, 2018 at 9:48
  • every platform has it own limitation,.You have to build your logic of requirement according to it
    – Amit Bera
    Oct 8, 2018 at 9:58

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