Mryntu

I have configurable products in the shopping cart but i want to add one column with stock item the products by sizes

i have an observer

 <controller_action_predispatch_checkout_cart_index>
 <observers>
 <shopping_cart>
 <type>singleton</type>
 <class>Myspace_Mymodule_Model_Observer</class>
 <method>addExtraItemShoppingCart</method>
 </shopping_cart>
 </observers>
 </controller_action_predispatch_checkout_cart_index>





public function addExtraItemShoppingCart(Varien_Event_Observer $observer)
 $quote = Mage::getModel('checkout/session')->getQuote();
 $cartItems = $quote->getAllItems();

 foreach ($cartItems as $item)
 $productType = $item->getProduct()->getTypeId();
 if($productType!='configurable')
 //Mage::log($item->getSku(), null, 'shoppingCartB2B.log',true);

 $product = Mage::getModel('catalog/product')->load($item->getProductId());
 $qtyStock = Mage::getModel('cataloginventory/stock_item')->loadByProduct($product)->getQty();
 $size = $product->getResource()->getAttribute('talla')->getFrontend()->getValue($product);

 $item->setData('talla', $item->getId())->save();
 
 
 Mage::getSingleton('checkout/session')->setCartWasUpdated(true);

and in the file
app/design/frontend/THEME/default/template/checkout/cart/item/default.phtml

$_item->getData('talla');

print talla, but does not work.

if someone can help me, thank you.

i have solved the problem :)
this is a solution.
In the file

app/design/frontend/THEME/default/template/checkout/cart/item/default.phtml

add

$product_child = $_item->getProduct()->getTypeInstance(true)
->getOrderOptions($_item->getProduct());

$product_hild = Mage::getModel('catalog/product')
 ->setStoreId(Mage::app()->getStore()->getId())
 ->loadByAttribute('sku',$product_child['simple_sku']);