Magento 2: save item options in quote(quote_item_option)

Question

I need to add new option for item.

Now in quote_item_option i have:

{"id":"54","product":"54","selected_configurable_option":"","related_product":"","options":{"4":""},"qty":"1"}

But wanna {"id":"54","product":"54","selected_configurable_option":"","related_product":"","options":{"4":"", "new_option":"some_value"},"qty":"1"}

I created following controller:

<?php

   namespace MySpace\SomeModule\Controller\Quote;
    class Index extends \Magento\Framework\App\Action\Action
    {
        /**
         * @var \Magento\Framework\Controller\Result\JsonFactory
         */
        protected $resultJsonFactory;

        /**
         * @var \Magento\Checkout\Model\Session
         */
        protected $checkoutSession;

        /**
         * Update constructor.
         * @param \Magento\Framework\App\Action\Context $context
         * @param \Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory
         * @param \Magento\Checkout\Model\Session $checkoutSession
         */
        public function __construct(
            \Magento\Framework\App\Action\Context $context,
            \Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory,
            \Magento\Checkout\Model\Session $checkoutSession
        ) {
            parent::__construct($context);
            $this->resultJsonFactory = $resultJsonFactory;
            $this->checkoutSession = $checkoutSession;
        }

        /**
         * @return \Magento\Framework\Controller\Result\Json
         */
        public function execute()
        {
            $a = 3;
            $itemId = (int) $this->getRequest()->getParam('item_id');
            $orderNoteEnabledValue = (string) $this->getRequest()->getParam('new_option');

            if ($itemId && $newOptionValue) {
                $quote = $this->checkoutSession->getQuote();
                /** @var \Magento\Quote\Model\Quote\Item $item */
                foreach ($this->checkoutSession->getQuote()->getItems() as $item) {
                    if ((int)$item->getItemId() !== $itemId) {
                        continue;
                    }
                    $buyRequest = $item->getBuyRequest();

                    $options = $buyRequest->getData('options');
                    if (!$options) {
                        $options = [];
                    }
                    $options['new_option'] = $newOptionValue;
                    $buyRequest->setData('options', $options);

                    $quote->updateItem($itemId, $buyRequest);
                    $quote->save();

                    break;
                }
            }

            return $this->resultJsonFactory->create()->setData(['message' => 'Error']);
        }
    }

I debugged, script getts data(option value) successfully, modified it also, but not saving option with new field to table.

What is issue or my mistake?

Thanks for any halp and advise:)

Answer 1

the solution: just need to get option for item_id by name "info_buyRequest". after unserialize, modify value(add element), serialize and save

Answer 2

Try calling $item->saveItemOptions() instead of (or along side with) $quote->save()