If you want to Add Product to Magento Cart with Price Change then you have to write an Observer that listens the “checkout_cart_product_add_after” or “checkout_cart_update_items_after” event.
You need to modify the code as shown below.
The code is same except checkout_cart_product_add_after is called for only one item and checkout_cart_update_items_after is called for all items in the cart.
Step 1. Open etc/config.xml of your module. CodeMasterz is company name and CustomDiscount is your module name
<?xml version="1.0"?>
<config>
<modules>
...
</modules>
<global>
<models>
...
</models>
<!--Creating a observer for custom discount on cart page by Vaseem-->
<events>
<checkout_cart_product_add_after>
<observers>
<unique_event_name>
<class>CodeMasterz_CustomDiscount_Model_Observer</class>
<method>myCustomDiscount</method>
</unique_event_name>
</observers>
</checkout_cart_product_add_after>
</events>
...
</global>
</config>
Step 2. Then create a file in your module folder “Model/Observer.php”
<?php
class CodeMasterz_CustomDiscount_Model_Observer
{
public function myCustomDiscount(Varien_Event_Observer $observer)
{
$item = $observer->getQuoteItem();
if ($item->getParentItem()) {
$item = $item->getParentItem();
}
//discount 20% off
$discount = 0.20;
// Check if the discount isn't applied over and over while refreshing
//$specialPrice = $item->getPrice() - ($item->getPrice() * $discount);
$specialPrice = 125;
if ($specialPrice > 0) {
$item->setCustomPrice($specialPrice);
$item->setOriginalCustomPrice($specialPrice);
$item->getProduct()->setIsSuperMode(true);
}
}
?>
Hope above works for you. If you have any difficulty understanding the code or anything else then you can contact me using contact page at this website.
