Change price while adding to cart page in magento

Question

I have written a customized code to add different price of product on product page:

Code in: app/code/local/custom/price/etc/config.xml

<?xml version="1.0"?>
<config>
  <global>
    <models>
        <price>
             <class>custom_price_Model</class>
        </price>
    </models>
    <events>
      <checkout_cart_product_add_after>
          <observers>
               <custom_price_observer>
               <class>price/observer</class>
               <method>modifyPrice</method>
               </custom_price_observer>
          </observers>
      </checkout_cart_product_add_after>
    </events>
  </global>
</config>

Code in : app/code/local/custom/price/Model/Observer.php

class custom_price_Model_Observer
{
    public function modifyPrice(Varien_Event_Observer $obs)
    {
        // Get the quote item
        $item = $obs->getQuoteItem();
        // Ensure we have the parent item, if it has one
        $item = ( $item->getParentItem() ? $item->getParentItem() : $item );
        // Load the custom price
        $price = "30";
        // Set the custom price
        $item->setCustomPrice($price);
        $item->setOriginalCustomPrice($price);
        // Enable super mode on the product.
        $item->getProduct()->setIsSuperMode(true);
    }

Still its not working. Kindly Help.

When any item added in cart at that time magento get item price using that particular item(product) id so you have to use observer for this. — Hardik Visa, Oct 11 '16 at 05:31
I want to update the price for the product in total as well as all the emails. How can this be achieved..? @NewBeeInMagento — Rachita Chugh, Oct 11 '16 at 06:01
@NewBeeInMagento : Can you please suggest the way to implement this via observer? — Rachita Chugh, Oct 11 '16 at 13:42
You can use [this](http://stackoverflow.com/questions/9721583/changing-the-price-in-quote-while-adding-product-to-cart-magento) for observer. — Hardik Visa, Oct 12 '16 at 03:08
@NewBeeInMagento : I have applied observer still not working. I have edited the question. Can you please have a look and suggest if I am missing something. — Rachita Chugh, Oct 17 '16 at 18:03
You have to save **Quote**. See in the link which I shared last comment. — Hardik Visa, Oct 19 '16 at 04:44

score 1 · Answer 1 · answered Oct 19 '16 at 04:46

You have to do following way to save your custom price.

class custom_price_Model_Observer
{
     public function modifyPrice(Varien_Event_Observer $obs)
     {
         // Get the quote item
         $item = $obs->getQuoteItem();
         // Ensure we have the parent item, if it has one
         $item = ( $item->getParentItem() ? $item->getParentItem() : $item );
        // Load the custom price
        $price = "30";
        // Set the custom price
        $item->setCustomPrice($price);
        $item->setOriginalCustomPrice($price);
        // Enable super mode on the product.
        $item->getProduct()->setIsSuperMode(true);
        $item>save();
    }
}

score 0 · Answer 2 · answered Nov 01 '16 at 12:31

below is the code i used for apply discount for products after added to cart,i have applied 50% discount for products added to cart and it works for me.

function modifyPrice(Varien_Event_Observer $observer){
    $event = $observer->getEvent();
    $quote_item = $event->getQuoteItem();
    $product_id=$quote_item->getProductId();
    $product_price = Mage::getModel('catalog/product')
                        ->load($product_id)
                        ->getPrice();         
    if($product_price != 0){           
        $percentDiscount = 0.50;
        $specialPrice = $product_price - ($product_price * $percentDiscount);  
        $quote_item->setOriginalCustomPrice($specialPrice);        
    }
}

Change price while adding to cart page in magento

2 Answers2