magento how to change cart account in checkout page - magento

Question

in product detail page, the product price is 50 dollar, I use JavaScript change the price to 80 dollar, but when add to cart, it is still 50 dollar in checkout page. how to let it still 80 dollar in checkout page?

Answer 1

You need use "sales_quote_add_item" magento event to update the product price in cart session.
You have to make a custom module for that purpose.
Create a file in app/etc/modules/Company_All.xml
<?xml version="1.0"?> <config> <modules>
<Company_Product>
<codePool>local</codePool>
<active>true</active>
</Company_Product> </modules> </config>
Create configuration file for our module file in app/code/local/Company/Product/etc/config.xml
<?xml version="1.0"?> <config> <global>
<models>
<product>
<class>Company_Product_Model</class>
</product>
</models>
<events>
<sales_quote_add_item><!--Event to override price after adding product to cart-->
<observers>
<company_product_price_observer><!--Any unique identifier name -->
<type>singleton</type>
<class>Company_Product_Model_Price_Observer</class><!--Our observer class name-->
<method>update_book_price</method><!--Method to be called from our observer class-->
</company_product_price_observer>
</observers>
</sales_quote_add_item>
</events> </global> </config>
Create our observer file in app/code/local/Company/Product/Model/Price/Observer.php
class Company_Product_Model_Price_Observer{
public function update_book_price(Varien_Event_Observer $observer) {
$quote_item = $observer->getQuoteItem();
//if(){ //your logic goes here
$customprice = 50;
//}
$quote_item->setOriginalCustomPrice($customprice);
$quote_item->save();
return $this;
}
}