How to call custom attribute value from back-end code in Magento

Question

I have create a custom attribute call manufacturer_email from the backend and assign the values for the products.

The main reason for this is i need to fire an email to its manufacturer when an customer place a order through the web site. I found the observe for this and also how to fire the email.

The problem is the custom attribute returns an empty result without the email address. can anyone tell me how to get the value for this attribute???

Backend Code

public function logUpdate(Varien_Event_Observer $observer)
{        
  $order = $observer->getOrder();

  $email_stacks = array();
  foreach ($order->getAllItems() as $item)
  {
     // only add simple products to email, not a configurable product for example
     if ($item->getData('product_type')!=Mage_Catalog_Model_Product_Type::TYPE_SIMPLE)
        continue;

     $manufacturer = $item->getData('manufacturer_email');
     $sku = $item->getData('sku');
     Mage::log(" {$manufacturer} and {$sku} updated", null, 'manufacturer-email.log');

Result

2014-09-08T12:35:32+00:00 DEBUG (7):   and SKU5001 updated

Attribute and inputs

Answer 1

Instead of $item->getData('manufacturer_email');

Do: $item->getProduct()->getData('manufacturer_email');

The reason for this is that when you add a product to cart only some of it's attributes are transferred to the quote item object, sku being one of them. By default Magento behavior, custom attributes like manufacturer_email would not be added to the quote item object/table. So you need to retrieve the value from the product object.

Answer 2

After going through so many codes i found ANSWER

$manufacturer= Mage::getModel('catalog/product')->load($item->getProductId())->getData('manufacturer_email');