/**
* Updates quantity of selected item by it's key.
*
* @param $key string Item key in the cart.
* @param $quantity int Quantity to set.
*
* @throws Exception When product does not exists or quantity is not numeric.
*/
public function updateQuantity($key, $quantity)
{
if (!$this->hasItem($key)) {
throw new Exception(__('Item does not exists', 'jigoshop'));
}
if (!is_numeric($quantity)) {
throw new Exception(__('Quantity has to be numeric value', 'jigoshop'));
}
if ($quantity <= 0) {
$this->removeItem($key);
return;
}
$item = $this->getItem($key);
$product = $item->getProduct();
if ($product === null || $product->getId() === 0) {
throw new Exception(__('Product not found', 'jigoshop'));
}
if ($product instanceof Product\Purchasable && !$this->checkStock($product, $quantity)) {
throw new NotEnoughStockException($product->getStock()->getStock());
}
parent::updateQuantity($key, $quantity);
}
