Magento 2-数量更新后产品丢失缩略图

Question

I'm not sure why everything is so difficult with Magento. I am trying to update product quantities programatically.

try{
    $product = $this->productRepository->get($sku);
    $product->setStockData( [
        'qty' => $quantity
    ] );

    $this->productRepository->save($product);

} catch (NoSuchEntityException $e) { }

This seems to work just fine, however, when I go into the admin and look at the products list, the thumbnails are missing for any product that has been updated.

If I go into that product and look at its images they are all there and the thumbnail image still has the label/role "thumbnail" attached.

Answer 1

The correct way to do this is by using the StockRegistryInterface

/**
 * @var StockRegistryInterface
 */
protected $stockRegistry;

/**
 * Inventory constructor.
 * @param StockRegistryInterface $stockRegistry
 */
public function __construct(
    StockRegistryInterface $stockRegistry
)
{
    $this->stockRegistry = $stockRegistry;
}

With the above code, you can use the following:

$stockItem = $this->stockRegistry->getStockItemBySku($sku);
$stockItem->setQty($qty);
$this->stockRegistry->updateStockItemBySku($sku, $stockItem);

This code will not call unrelated observers or plugins that you may have on your project and it will not break the thumbnail