how to get product quantity in observer

Question

I'm working on magento2.4 .Need to get the quantity of the product in product save after observer. while get qty it always returns null for newly created products.

Note:qty shows correctly for updating the product.

    <?php

namespace YOURNAMESPACE\YOURMODULENAME\Observer;

use Magento\Framework\Event\ObserverInterface;

class Productsaveafter implements ObserverInterface
{    
    public function execute(\Magento\Framework\Event\Observer $observer)
    {
        $product = $observer->getEvent()->getProduct(); 
        $stockItem = $product->getExtensionAttributes()->getStockItem();
        $stockData = $stockItem->getQty();

    }   
}

Answer 1

Here is an example of how you can get the quantity of a newly created product in the catalog_product_save_after observer:

    use Magento\Framework\Event\Observer;
    use Magento\Framework\Event\ObserverInterface;
    use Magento\Catalog\Model\Product;

    class MyObserver implements ObserverInterface
    {
        protected $_stockRegistry;

        public function __construct(
            \Magento\CatalogInventory\Api\StockRegistryInterface $stockRegistry
        ) {
            $this->_stockRegistry = $stockRegistry;
        }

        public function execute(Observer $observer)
        {
            $product = $observer->getEvent()->getProduct();
            $productId = $product->getId();
            $stockItem = $this->_stockRegistry->getStockItem($productId);
            $qty = $stockItem->getQty();
            
            // Do something with the quantity information
        }
    }

In this example, we're using the StockRegistryInterface to get the stock information for the newly created product.