Magento 2: Rest API update multiple cart Items

Question

I need to update multiple cart items quantity in Rest API.

Default Magento only have update single cart item.

Single cart update Item endpoint:

/V1/carts/mine/items/:itemId

I have tried with custom endpoint but not get update multiple items.

Multiple item custom endpoint:

localhost/magento2/rest/V1/custom/carts/mine/update/items?cartItem[0][item_id]=85411&cartItem[0][qty]=2&cartItem[0][quote_id]=25645&cartItem[1][item_id]=85412&cartItem[1][qty]=1&cartItem[1][quote_id]=25645

Params:

cartItem[0][item_id] 85411
cartItem[0][qty] 2
cartItem[0][quote_id] 25645
cartItem[1][item_id] 85412
cartItem[1][qty] 1
cartItem[1][quote_id] 25645

Method: PUT

Let me know if any have idea about to update multiple cart items in rest API.

Any help would be appreciated. Thanks.

Answer 1

call the items in the loop and load quote object and set quantity or another field.

sample code

 public function updateItems($cartId, $cartItem)
 {
 $result = $this->dataObjectFactory->create();
 $quote = $this->quoteRepository->getActive($cartId); 
 foreach ($cartItem as $itemValue) {
 $item = $this->quoteItemFactory->create()->load($itemValue['item_id']);
 $item = $quote->getItemById($itemValue['item_id']);
 $item->setQty($itemValue['qty']);
 $quoteItems[] = $item;
 } 
 $quote->setItems($quoteItems);
 $this->quoteRepository->save($quote);
 $quote->collectTotals();
 $quote->getLastAddedItem();}

Please let me know if this is helpful.