Orsdxy

I used this to Add Additional Options In Magento 2 Cart

https://livesubwpcache.cloudways.com/blog/add-additional-options-in-magento-2/

But this is working only with Simple product.

For configurable products, I did the following change

$item->addOption(array(

    'product_id' => $item->getProductId(),

    'code' => 'additional_options',

    'value' => serialize($additionalOptions)

));

After that, the additional_options going to the cart. But it is not getting saved when complete the order.

seems because of this ….

//filter out config/bundle etc product

if(!$item->getParentItemId() && $item->getProductType() == MagentoCatalogModelProductType::TYPE_SIMPLE)

{

    $this->quoteItems[$item->getId()] = $item;

}

How can I fix it ? I need this functionality for configurable products.

Step 1: Create registration.php and module.xml file the for custom module.

Step 2: Assign Observers to Events

/app/code/Namespace/Mymodule/etc/events.xml

    <?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">

    <event name="catalog_product_load_after">

        <observer name="set_additional_options" instance="NamespaceMymoduleObserverSetAdditionalOptions"/>

    </event>

</config>

Step 3: Create the Observers

app/code/Namespace/Mymodule/Observer/SetAdditionalOptions.php

<?php

namespace NamespaceMymoduleObserver;



use MagentoFrameworkEventObserverInterface;

use MagentoFrameworkAppRequestInterface;



class SetAdditionalOptions implements ObserverInterface

{

    /**

     * @var RequestInterface

     */

    protected $_request;



    /**

     * @param RequestInterface $request

     */

    public function __construct(

        RequestInterface $request

    ) {

        $this->_request = $request;

    }



    /**

     * @param MagentoFrameworkEventObserver $observer

     */

    public function execute(MagentoFrameworkEventObserver $observer)

    {

        // Check and set information according to your need

        if ($this->_request->getFullActionName() == 'checkout_cart_add') { //checking when product is adding to cart

            $product = $observer->getProduct();

            $additionalOptions = ;

            $additionalOptions = array(

                'label' => "Some Label",

                'value' => "Your Information",

            );

            $observer->getProduct()->addCustomOption('additional_options', serialize($additionalOptions));

        }

    }

}

run below command after

rm -rf var/di var/generation var/cache/* var/log/* var/page_cache/*



php bin/magento setup:upgrade



php bin/magento setup:di:compile



php bin/magento cache:clean



php bin/magento cache:flush



php bin/magento indexer:reindex

reference links

https://www.cloudways.com/blog/add-additional-options-in-magento-2/

https://webkul.com/blog/additional-options-cart-item-magento2/

After add additional options to cart You need to create another observer for save additional attributes order item from quote item.

Please add this event observer code in Module's etc/events.xml

<event name="sales_model_service_quote_submit_before">

    <observer instance="VendorModuleObserverSalesOrderItemAdditionalOptions" name="vendor_module_observer_sales_model_service_quote_submit_before"/>

</event>

Please create observer file in your module

VendorModuleObserverSalesOrderItemAdditionalOptions.php

And here is Observer code for save Additional Options to Order Item.

<?php

namespace VendorModuleObserverSales;

use MagentoFrameworkEventObserverInterface;

use MagentoFrameworkAppObjectManager;

use MagentoFrameworkSerializeSerializerJson;

class OrderItemAdditionalOptions implements ObserverInterface

{

public function __construct(

Json $serializer = null

) {    

    $this->serializer = $serializer ?: ObjectManager::getInstance()->get(Json::class);

}

/**

 * @param MagentoFrameworkEventObserver $observer

 */

public function execute(MagentoFrameworkEventObserver $observer)

{

    try {

        $quote = $observer->getQuote();

        $order = $observer->getOrder();

        $quoteItems = ;



        // Map Quote Item with Quote Item Id

        foreach ($quote->getAllVisibleItems() as $quoteItem) {

            $quoteItems[$quoteItem->getId()] = $quoteItem;

        }



        foreach ($order->getAllVisibleItems() as $orderItem) {

            $quoteItemId = $orderItem->getQuoteItemId();

            $quoteItem = $quoteItems[$quoteItemId];

            $additionalOptions = $quoteItem->getOptionByCode('additional_options');





            if (count($additionalOptions) > 0) {

                // Get Order Item's other options

                $options = $orderItem->getProductOptions();

                // Set additional options to Order Item

                $options['additional_options'] = $this->serializer->unserialize($additionalOptions->getValue());

                $orderItem->setProductOptions($options);

            }

        }

    } catch (Exception $e) {

        // catch error if any

    }

}

}

Please check this I think it will help you.

after $item->addOption(...) try calling $item->saveItemOptions().

Also a side note, don't add the options as serialized using serialize($additionalOptions), use json_encode or better yet the method MagentoFrameworkSerializeSerializerJson::serialize.