How to load stock item using product_id in Magento 2?

Question

I am trying to get the stock status (is_in_stock) of an item. Currently, I am using the

\Magento\CatalogInventory\Model\Stock\StockItemRepository

which only accepts stock item id to fetch the product stock item data, is there any way we can fetch the stock using the product id?
Like:

$this->stockItemRepository->loadByProductId($product_id)->getIsInStock();

Answer 1

You need to inject \Magento\CatalogInventory\Api\StockRegistryInterface in your file :

protected $stockRepository;

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

Now, Add this below code in your function :

$productStock = $this->stockRepository->getStockItem($productId);
echo $productStock['is_in_stock'];

Answer 2

Below script helpful to get stock data using object manager

$productId = 1;
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$productStockObj = $objectManager->get('Magento\CatalogInventory\Api\StockRegistryInterface')->getStockItem($productId);
print_r($productStockObj->getData());

OR

Use of this Block Class

namespace Vendor\Module\Block;

use Magento\Framework\View\Element\Template;
use Magento\Backend\Block\Template\Context;
use Magento\CatalogInventory\Model\Stock\StockItemRepository;

class HelloWorld extends Template
{    
    protected $stockItemRepository;
        
    public function __construct(
        Context $context,        
        StockItemRepository $stockItemRepository
    )
    {
        $this->stockItemRepository = $stockItemRepository;
        parent::__construct($context);
    }
    
    public function getStockItem($productId)
    {
        return $this->stockItemRepository->get($productId);
    }
}

you can call to this in phtml file :

$id = 1;
$productStock = $block->getStockItem($id);

Answer 3

The below method will work in Magento 2.3.4

Magento\CatalogInventory\Model\Stock\StockItemRepository

But in Magento 2.3.5 it will not work. Instead, you have to use below one

Magento\CatalogInventory\Api\StockRegistryInterface

Answer 4

Use this code:

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$stockRegistry = $objectManager->get('Magento\CatalogInventory\Api\StockRegistryInterface');
$stockItem = $stockRegistry->getStockItem($product_id);
$IsInStock = $stockItem->getIsInStock();
if ($IsInStock) {
    echo "Is in stock";
}

Answer 5

Try this,

$this->stockItemRepository->get($product_id)->getIsInStock();

Insted of this

$this->stockItemRepository->loadByProductId($product_id)->getIsInStock();