Magento 1.9 : How to get the total price of products added to cart based on product Attribute?

Question

I'm currently working on a Magento extension where I need help in getting the total price of all products having the same attribute when they are added to the cart.

Here is my code for a better explanation @ the shipping's carrier page:

foreach ($this->_quote->getAllItems() as $item) {


        $productid = $item->getProductId();

        $product = Mage::getModel('catalog/product')->load($productid);


     $chilledFood = $product->getData('is_chilled_food'); // the custom attribute 'is_chilled' added to product backend, so if the product is chilled, the value will be 'yes' 
        if ($chilledFood) {  // need help from here?
            return $this->_price = ' ';
        }


    }

So I need help on knowing if the customer selects chilled food in the cart. If yes, the shipping price will be an additional $5 from other types of food category. BUT there will be free shipping cost if the total chilled food amounts to $50 and above.

Thank you.

Answer 1

Hope this help:

foreach ($this->_quote->getAllItems() as $item) {


    $productid = $item->getProductId();

    $product = Mage::getModel('catalog/product')->load($productid);


 $chilledFood = $product->getData('is_chilled_food'); // the custom attribute 'is_chilled' added to product backend, so if the product is chilled, the value will be 'yes' 
    if ($chilledFood == 1 ) {  // need help from here?
        $totalPrice += $product->getFinalPrice()*$item->getQty();
    }


}
echo $totalPrice;