Filter collection on checkout/cart

Question

It is possible to do some collection in checkout/cart ? I tried this one but it doesn't work . My objectif is to get all items cart then filter them by attribute.

$_cart = Mage::getModel('checkout/cart')->getCollection()
    ->addAttributeToSelect('*')
    ->addAttributeToFilter('attribute', 'value')
    ->setPageSize(100);

foreach ($_cart as $item) {
    echo $item->getPrice();
}

or

$items= Mage::getSingleton('checkout/cart')->getQuote()->getItemsCollection();
// I dont know if it is possible to add a filter on it.

Answer 1

Using addAttributeToFilter() does not work, because this collection is already loaded here.

To filter this collection can use addAttributeToFilter() and getAllIds() to just get the items you need.

# get items in cart
$items = Mage::getSingleton('checkout/cart')->getQuote()->getItemsCollection();
$items->addFieldToFilter('sku', 75782007);

$itemIds = $items->getAllIds();
foreach ($items as $item) {
    if (in_array($item->getId(), $itemIds)) {
        var_dump($item->getSku());
    }
}