How to add quote Item id as new field?

Question

I have a new field varient_id in sales_flat_quote_item and sales_flat_order_item table.

I want to save item_id as varient_id in sales_flat_quote_item and sales_flat_order_item table. ie,quote item_id as quote varient_id and order item_id as order item_id.

How can I do it?

Answer 1

Beste way i think is creating a observer on the sales_model_service_quote_submit_after action and there manipulate the database to process the data needed. hope this helps.

In config.xml

<sales_model_service_quote_submit_after>
            <observers>
                <set_itemid>
                    <type>singleton</type>
                    <class>Company_Module_Model_Observer</class>
                    <method>setVariantId</method>
                </set_itemid>
            </observers>
    </sales_model_service_quote_submit_after>

In Observer

  public function setVariantId($observer)
    {               
        $order = $observer->getEvent()->getOrder();
        $quote = $observer->getEvent()->getQuote();
        $orderId = $order->getId();
        $orderItems = $order->getAllItems();
        foreach($orderItems as $item){      

                $parentId = 0;
                $orderItemCollection = Mage::getModel('sales/order_item')->getCollection()
                            ->addFieldToFilter('quote_item_id', $item->getVariantId())
                            ->addFieldToFilter('order_id', $orderId);
                foreach($orderItemCollection as $col){
                    $parentId = $col->getItemId();              
                }
                if($parentId){
                    $item->setVariantId((int)$parentId);
                    $item->save();
                }
        }

    }

Answer 2

I have a solution here for Magento 2. I am sharing this for basic Idea. You can create an observer in 1.9 for sales_model_service_quote_submit_after in your XML file.

<events>
    <sales_model_service_quote_submit_after>
        <observers>
            <onepagecheckout>
                <type>model</type>
                <class>onepagecheckout/observer</class>
                <method>saveData</method>
            </onepagecheckout>
        </observers>
    </sales_model_service_quote_submit_after>
</events>

In observer file you can update your item ID. Here is the code that we need to add observer file.

protected $_checkoutSession;
public function __construct ( \Magento\Checkout\Model\Session $_checkoutSession ) {
    $this->_checkoutSession = $_checkoutSession;
}
public function saveData(\Magento\Framework\Event\Observer $observer)
{
  $cartData = $this->_checkoutSession->getQuote()->getAllVisibleItems();
    foreach( $cartData as $item ):
        /* Here we can manipulate data */
    endforeach;
    $cartData->save();
}

for manipulate database and to process data you need block or model files. you also need to initialize resource, then you need to call connection. I hope it will give you an idea to save varient_id. Also here is a link can help you that How to manipulate db tables helplink1 helplink2