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Failed to update stock quantity for product in Magento 1.6.2

I am trying to update the stock quantity of products in Magento from a script.

I download the product, set the stock quantity and save - but the quantity remains the same.

// get stock data
$stockData = $product->getStockItem();
printf(PHP_EOL.'Stock: qty=%d, instock=%s, man_stock=%s, use_cfg_man_stock=%s'.PHP_EOL,
    $stockData->getData('qty'),
    $stockData->getData('is_in_stock'),
    $stockData->getData('manage_stock'),
    $stockData->getData('use_config_manage_stock')
);
// prints out qty=0, instock=, man_stock=, use_cfg_man_stock=


// $stockQty = 1
$product->stockItem->setData('qty', $stockQty);
$product->stockItem->setData('is_in_stock', $stockQty>0 ? 1 : 0);
$product->stockItem->setData('manage_stock', 1);
$product->stockItem->setData('use_config_manage_stock', 0);

$product->save();                           
$product->load();                           
$stockData = $product->getStockItem();
printf('New Stock: qty=%d, instock=%s, man_stock=%s, use_cfg_man_stock=%s'.PHP_EOL,
    $stockData->getData('qty'),
    $stockData->getData('is_in_stock'),
    $stockData->getData('manage_stock'),
    $stockData->getData('use_config_manage_stock')
);
// prints out qty=0, instock=, man_stock=, use_cfg_man_stock=

Where am I going wrong?

+5
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4 answers

All you were missing was to save $stockItem. You do not need to create a new one stock_item, and you do not need to save the product.

if (!($stockItem = $product->getStockItem())) {
    $stockItem = Mage::getModel('cataloginventory/stock_item');
    $stockItem->assignProduct($product)
              ->setData('stock_id', 1)
              ->setData('store_id', 1);
}
$stockItem->setData('qty', $stockQty)
          ->setData('is_in_stock', $stockQty > 0 ? 1 : 0)
          ->setData('manage_stock', 1)
          ->setData('use_config_manage_stock', 0)
          ->save();
+16
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I myself decided:

// get stock data
$stockData = $product->getStockItem();
printf(PHP_EOL.'Stock: qty=%d, instock=%s, man_stock=%s, use_cfg_man_stock=%s'.PHP_EOL,
    $stockData->getData('qty'),
    $stockData->getData('is_in_stock'),
    $stockData->getData('manage_stock'),
    $stockData->getData('use_config_manage_stock')
);
// prints out qty=0, instock=, man_stock=, use_cfg_man_stock=


// $stockQty = 1
$stockItem = Mage::getModel('cataloginventory/stock_item');
$stockItem->assignProduct($product);
$stockItem->setData('is_in_stock', 1);
$stockItem->setData('stock_id', 1);
$stockItem->setData('store_id', 1);
$stockItem->setData('manage_stock', 0);
$stockItem->setData('use_config_manage_stock', 0);
$stockItem->setData('min_sale_qty', 0);
$stockItem->setData('use_config_min_sale_qty', 0);
$stockItem->setData('max_sale_qty', 1000);
$stockItem->setData('use_config_max_sale_qty', 0);
$stockItem->setData('qty', $stockQty);
$stockItem->save();

$product->save();                           
$product->load();                           
$stockData = $product->getStockItem();
printf('New Stock: qty=%d, instock=%s, man_stock=%s, use_cfg_man_stock=%s'.PHP_EOL,
    $stockData->getData('qty'),
    $stockData->getData('is_in_stock'),
    $stockData->getData('manage_stock'),
    $stockData->getData('use_config_manage_stock')
);
// prints out qty=1, instock=1, man_stock=0, use_cfg_man_stock=0

By creating a new StockItem and assigning it to this product. Hope this helps someone else.

+2
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-

 <?php echo $stock = Mage::getModel('cataloginventory/stock_item')->loadByProduct($_product); ?>

, -

<?php echo $stock->getQty(); ?> // Will display stock quantity
<?php echo $stock->getMinQty(); ?> // Will display minimum quantity
<?php echo $stock->getMinSaleQty(); ?> //will display minimum salable quantity
+2

In my case, I had the same problem with products that I imported programmatically. I just realized that I forgot to add stock_data to the array ...

'name' => $productName,
'stock_data' => array(
                        'use_config_manage_stock' => 0,
                        'manage_stock' => 0,
                        'qty' => 0,
                        'stock_id' => 1,
                        'min_qty' => 0,
                    )

If stock information is not available, Magento throws an exception (with \ Mage_CatalogInventory_Model_Stock_Item) when adding a product to the cart.

It works with this node. =)

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