/**
* Changes the quantity of a Product in the Cart
*
* @param CoreShopProduct $product
* @param int $amount
* @param bool|true $autoAddCartRule
* @return bool|CoreShopCartItem
* @throws \Exception
*/
public function updateQuantity(CoreShopProduct $product, $amount = 0, $autoAddCartRule = true)
{
if (!$product instanceof CoreShopProduct) {
throw new \Exception("\$product must be instance of CoreShopProduct");
}
$item = $this->findItemForProduct($product);
if ($item instanceof CoreShopCartItem) {
if ($amount <= 0) {
$this->removeItem($item);
return false;
} else {
$item->setAmount($amount);
$item->save();
}
} else {
$items = $this->getItems();
if (!is_array($items)) {
$items = array();
}
$item = new CoreShopCartItem();
$item->setKey(uniqid());
$item->setParent($this);
$item->setAmount($amount);
$item->setProduct($product);
$item->setPublished(true);
$item->save();
$items[] = $item;
$this->setItems($items);
$this->save(true);
}
if ($autoAddCartRule) {
PriceRule::autoAddToCart();
}
return $item;
}
