I have two event observer in my custom module :

// 1st : checkout_cart_product_add_after
    $item = $observer->getQuoteItem();

// 2nd : checkout_cart_add_product_complete
    $quote = Mage::getSingleton('checkout/cart')->getQuote();
    $quote_id = $quote->getId(); // quote_id
    foreach($quote->getAllItems() as $quote_item)
        if($quote_item->getIsNew() == true)
            $item = $quote_item;
    // here I want to set custom quote item price and tried below code but it is not working
    $item->save(); // updated

I want to set custom price to quote item in checkout_cart_add_product_complete event.

If I am using the code setCustomPrice and setOriginalCustomPrice in checkout_cart_product_add_after event then it is working.

But I need quote_id as well with dynamic price for some other use and I can't get quote_id in checkout_cart_product_add_after event, so I am using checkout_cart_add_product_complete event.

How to set quote item custom price in event checkout_cart_add_product_complete?

EDIT : With $item->save() it save custom price for quote_item but on change currency custom price not going to update.

I also tried https://stackoverflow.com/a/38243913/4073217 but it is not working in my case.

How to set custom price for quote_item which work with currency change?

2 Answers 2


You can always update quote, hack it, change value directly in database, but it would be overkill and so far from best practice.

If you need quote_id, you can easily grab it from checkout_card_product_add_after event, because it set quote_item during event dispatch:

Mage::dispatchEvent('checkout_cart_product_add_after', array('quote_item' => $result, 'product' => $product));

All you have to do in your observer is:

$quote_id = $this->getEvent()->getQuoteItem()->getQuote()->getId();
  • Please check my question I'm able to get quote_id in event checkout_cart_add_product_complete and want to set custom price for quote_item. and not able to get quote_id in event checkout_cart_product_add_after. Mar 2, 2017 at 10:21
  • There is no reason why you cannot achieve the same thing in checkout_cart_product_add_after as you're doing in checkout_cart_add_product_complete. Just use $this->getEvent()->getQuoteItem()->getQuote() and do whatever you need with quote items. Mar 2, 2017 at 10:24
  • 1
    please check this : magento.stackexchange.com/a/156952/14039. Mar 2, 2017 at 10:25
  • I still think that your business logic can be defined on the other way. But, let's not go further with it, you can try to rewrite Mage_Checkout_Model_Cart, and in addProduct() function, just add new event dispatch before return $this;. Something like: Mage::dispatchEvent('checkout_cart_product_add_after_custom', array('quote' => $this->getQuote(), 'quote_item' => $result, 'product' => $product));. If there is no quote_id set, just add check and call save(), and live with that little overhead. Mar 2, 2017 at 10:34
  • Please check my edit question. Mar 2, 2017 at 12:49

In Magento2:

You can achieve this with Event and Observer. There are following steps:

  • Step 1: Create Simple Extension
  • Step 2: Declaration of Module
  • Step 3: Registration of Module
  • Step 4: Activate the Module
  • Step 5: Declare event
  • Step 6: Create Observer for Custom Price

We need to catch the event - checkout_cart_product_add_after in step 5. In the Observer, write the code to set the custom price.

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