Mrthdrb

I want to assign items added to 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 in which I want to transfer the cart item already has a quote created on quote table. so I thought changing the quote_id of that customer on quote_item table would do the trick.

Let me explain by example:

Let us assume we have two customer with quote id 1 and 2.
Customer 1 added a product to the cart so on 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 than 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 programatically 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 update code that I have written.

$_objectManager = MagentoFrameworkAppObjectManager::getInstance();

$quoteItemModel = $_objectManager->create('MagentoQuoteModelQuoteItem');
//filter the product with same quote id 
 $productCollection = $_objectManager->create('MagentoQuoteModelResourceModelQuoteItemCollection')->addFieldToFilter('quote_id',$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
 $data['quote_id']='2';
 //updating the quote_item table
 $quoteItemModel->load($itemId)->addData($data);
 try 
 $quoteItemModel->setId($itemId)->save();
 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:xampphtdocs...vendormagentomodule-quoteModelQuoteItemAbstractItem.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(
 $this->getProductId(),
 false,
 $this->getQuote()->getStoreId()
 );
 $this->setProduct($product);
 

I don't understand what it has to do with the update of table quote_item.I think there is 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 clearify what could have possibly gone wrong?

Actually I searched the whole internet and also posted question on stackoverflow about the migration of customer cart from one customer to another but still I haven't got a perfect working solution for it.

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

Thanks.

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.