I want to assign items added to the cart by one customer to the other customer's cart.

For this, I see two tables responsible for holding that data. One is table named "quote" and other is "Quote_item".The customer to which I want to transfer the cart item already has a quote created on the quote table. so I thought changing the quote_id of that customer on the quote_item table would do the trick.

Let me explain by example:

Let us assume we have two customers with quote id 1 and 2. Customer 1 added a product to the cart so on the quote_item table the item will be saved with quote id 1. so if I could change the quote id of that item to 2 then that product will be assigned to customer 2.

I tried it by manually changing to the database and it worked. But When I tried to update that table programmatically than it couldn't update the row. I think there is some kind of dependencies that I couldn't figure out. So I hope if someone could help me figure it out.

Below is the updated code that I have written.

$_objectManager = \Magento\Framework\App\ObjectManager::getInstance();

$quoteItemModel = $_objectManager->create('Magento\Quote\Model\Quote\Item');
//filter the product with same quote id     
        $productCollection = $_objectManager->create('Magento\Quote\Model\ResourceModel\Quote\Item\Collection')->addFieldToFilter('quote_id',$quoteId);
            if($products = $productCollection->getData()){
                foreach ($products as $product) {
                    $itemId = $product['item_id'];
                    $data = array();
                    //just putting a static value to check if the data gets updated
                    //updating the quote_item table
                    try {
                        echo "Data updated successfully.";

                    } catch (Exception $e){
                        echo $e->getMessage(); 

I know the code works perfectly with other custom tables. But in this case, it is not updating the data. Its gives below error:

Fatal error: Call to a member function getStoreId() on null in E:\xampp\htdocs...\vendor\magento\module-quote\Model\Quote\Item\AbstractItem.php on line 144

When I checked that file. The function is:

 public function getProduct()
        $product = $this->_getData('product');
        if ($product === null && $this->getProductId()) {
            $product = clone $this->productRepository->getById(

I don't understand what it has to do with the update of table quote_item. I think there are some foreign key constraints or some dependency which is why it is not letting me update the quote_id of quote_item table.

Can some genius mind please help me out here or clarify what could have possibly gone wrong?

I searched the whole internet and also posted questions on StackOverflow about the migration of customer carts from one customer to another but still, I haven't got a perfect working solution for it.

If someone could help me with this, it would be greatly appreciated.


  • What I don't understand is why you want to add this item in one person's cart to another user.
    – camdixon
    Commented Dec 11, 2016 at 21:18
  • That's my requirement.actually one customer should be able to assign products to another customer cart. Commented Dec 12, 2016 at 9:02

1 Answer 1


could you explain more your task ? the customer 1 has to keep his quote and items ? and the customer 2 just have the same items than the customer 1 that's it? In this case just use the addProduct method which take 2 parameters ($product, $qty).

Get the items from customer 1's quote. Loop on it, and add product to your customer 2's quote.

  • Yes that could be one of the solution. can you post some code snippet. Actually I have complex bundle products with many options, so I guess doing that would be quite difficult. Can you post some code to verify your logic. THanks Commented Dec 12, 2016 at 9:01

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