This can occur when related products, upsells or cross-sells are used in a store with a custom stock and source configuration.

Saving one of the linked products can make the original product disappear from the storefront even though it was not changed directly.

The affected component is Magento 2.4.9 Linie. Adobe provides the Quality Patch ACP2E-4741 for this problem.

Contact me and I can check whether ACP2E-4741 resolves your issue or investigate other possible causes.

Using the Product Resource Model, you can read an attribute directly by product ID, attribute code and store ID:

use Magento\Catalog\Model\ResourceModel\Product as ProductResource;

public function __construct(
    private ProductResource $productResource
) {
}

public function getValue(int $productId, int $storeId): mixed
{
    return $this->productResource->getAttributeRawValue(
        $productId,
        'manufacturer',
        $storeId
    );
}

Magento does not load the entire product with all its attributes. Instead, it reads only the value you need. This can be useful when processing many products but retrieving only one attribute for each.

For a dropdown attribute such as manufacturer gibt getAttributeRawValue() , however, Magento returns the stored option ID rather than the visible label. To retrieve the label, resolve the option through the attribute’s source:

use Magento\Catalog\Model\ResourceModel\Product as ProductResource;
use Magento\Eav\Model\Config as EavConfig;

public function __construct(
    private ProductResource $productResource,
    private EavConfig $eavConfig
) {
}

public function getManufacturerLabel(
    int $productId,
    int $storeId
): ?string {
    $optionId = $this->productResource->getAttributeRawValue(
        $productId,
        'manufacturer',
        $storeId
    );

    if (!$optionId) {
        return null;
    }

    $attribute = $this->eavConfig->getAttribute(
        'catalog_product',
        'manufacturer'
    );

    $attribute->setStoreId($storeId);

    return $attribute->getSource()->getOptionText($optionId);
}

A stored option ID such as 42 can then become the visible label Bosch. The store ID also allows different attribute values and option labels for different store views.

The following SQL query returns products without product images:

SELECT
    p.entity_id,
    p.sku,
    p.type_id
FROM catalog_product_entity AS p
LEFT JOIN catalog_product_entity_media_gallery_value_to_entity AS mg
    ON mg.entity_id = p.entity_id
WHERE mg.value_id IS NULL
ORDER BY p.entity_id;

SELECT
    eas.attribute_set_id,
    eas.attribute_set_name,
    COUNT(cpe.entity_id) AS product_count
FROM eav_attribute_set eas
LEFT JOIN catalog_product_entity cpe
    ON cpe.attribute_set_id = eas.attribute_set_id
WHERE eas.entity_type_id = (
    SELECT entity_type_id
    FROM eav_entity_type
    WHERE entity_type_code = 'catalog_product'
)
GROUP BY
    eas.attribute_set_id,
    eas.attribute_set_name
ORDER BY
    eas.attribute_set_name;

The result lists the number of products assigned to each attribute set.

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

$stockItem = $this->stockRegistry->getStockItem($productId);
if ($stockItem->getIsInStock()) {
    echo "Product is in stock";
} else {
    echo "Out of stock";
}

Et voilà!

// 1 = aktiviert
// 2 = deaktiviert
$status = $product->getStatus()

Fertig!

To do this, set the store ID to 0, load the product and the required product attribute, and then restore the original store ID.

public function __construct(
    \Magento\Catalog\Api\ProductRepositoryInterface $productRepository,
    \Magento\Store\Model\StoreManagerInterface $storeManager
) {
    $this->productRepository = $productRepository;
    $this->storeManager = $storeManager;
}

$original = $this->storeManager->getStore()->getId();
$this->storeManager->setCurrentStore(0);
$product = $this->productRepository->get('12345', false, 0); // Replace 12345 with your product SKU
$allStoreViewsValue = $product->getCustomAttribute();
$this->storeManager->setCurrentStore($original);

If your product attribute identifier is “baking_time”, for example, use:

$product->getBakingTime();

.

Undefined array key 1234 in vendor/magento/module-catalog/Ui/DataProvider/Product/Form/Modifier/Eav.php on line 604

The ID can vary, but the cause is the same. Rebuilding the indexes with the following command, executed from your Magento 2 root directory, will often help:

php bin/magento indexer:reindex

You should now be able to open products in the admin area again.

Open Advanced Pricing and remove or correct those date values. This can happen after a data migration, for example.

If that does not help, or many products are affected, you can also update the values directly in the database using this query:

Warning: Run at your own risk. Back up the database first, or test the query on a staging system.

UPDATE catalog_product_entity_datetime SET value = '2022-01-01 00:00:00' WHERE value LIKE '%1970-01-01%';

You should now be able to save products in your Magento 2 store again.

echo Mage_Catalog_Block_Product::getPriceHtml($_product, true);

With PHP 7, you need to create an instance of Mage_Catalog_Block_Product and call getPriceHtml on that instance.

$productBlock = new Mage_Catalog_Block_Product;     
echo $productBlock->getPriceHtml($_product, true);