Magento - get cart items for a given product id

Question

I try to get the cart items for a given product;

I have tried this code :

$product = Mage::getModel('catalog/product')
    ->setStoreId(Mage::app()->getStore()->getId())
    ->load('2784');

$quote = Mage::getSingleton('checkout/cart')->getQuote();
$cartItems = $quote->getItemByProduct($product);
foreach ($cartItems as $item) {
    echo $item->getId()."<br/>";
}

but it don't gives anything.

How can I modify my code to use "getItemByProduct" in the right form ?

Thanks for help.

Answer 1

getItemByProduct() returns the first matching Mage_Sales_Model_Quote_Item so there is no need for an extra loop.

$item = $quote->getItemByProduct($product);
if ($item !== false) echo $item->getId();

Answer 2

I'd use

foreach ($quote->getItems() as $item) {
    if ($item->getProductId() == $product->getId()) {
        print_r($item->getData());
    }
}

Answer 3

You can not use getItemByProduct() function on the checkout/cart or checkout/quote model as that method is of the sales/quote model.

You can find this method at the Mage_Sales_Model_Quote class. so it is used withe sales/quote. hope this is useful.