I just want to restrict some of the category of products to purchase with other category products.
Workout :
If customer click add to cart using observer compare current add-to-cart product category id & already cart products category id, if the current product category id and cart products category id different trigger observer & display message like, You can not add This special Product, empty cart before add it,
and also vice versa, if cart has other category of products, if customer try to add restricted category products throw exception like If you want Kolu Padi, Purchase alone not mixed with other Products
config.xml
<?xml version="1.0"?>
<config>
<modules>
<Gta_KolupadiRestrict>
<version>1.0.0</version>
</Gta_KolupadiRestrict>
</modules>
<global>
<models>
<gta_kolupadirestrict>
<class>Gta_KolupadiRestrict_Model</class>
</gta_kolupadirestrict>
</models>
<events>
<checkout_cart_product_add_after>
<observers>
<Gta_KolupadiRestrict_Model_Observer>
<type>singleton</type>
<class>Gta_KolupadiRestrict_Model_Observer</class>
<method>cartevent</method>
</Gta_KolupadiRestrict_Model_Observer>
</observers>
</checkout_cart_product_add_after>
</events>
</global>
</config>My observer :
<?php
class Gta_KolupadiRestrict_Model_Observer {
public function cartevent(Varien_Event_Observer $observer) {
// Load product
$product = $observer->getProduct();
$prodID = $product->getId();
$_product = Mage::getModel('catalog/product')->load($prodID);
// get category id
$categoryIds = $_product->getCategoryIds();
// check cart
$cart_qty = (int)Mage::getModel('checkout/cart')->getQuote()->getItemQty();
// check conditiion cart has other products
if(in_array(681, $categoryIds) && $cart_qty > 0) {
Mage::throwException("You can not add This special Product, empty cart before add it");
}
// check if other products add to cart
$quote = Mage::getModel('checkout/cart')->getQuote();
foreach ($quote->getAllItems() as $item) {
$_product1 = $item->getProduct();
$categoryIds1 = $_product1->getCategoryIds();
if(in_array(681, $categoryIds1)) {
Mage::throwException("If you want Kolu Padi, Purchase alone not mixed with other Products");
break;
}
}
}
}
?>error :
a:5:{i:0;s:67:"If you want Kolu Padi, Purchase alone not mixed with other Products";i:1;s:1835:"#0 /home/abc/public_html/app/code/local/Gta/KolupadiRestrict/Model/Observer.php(21): Mage::throwException('If you want Kol...')
#1 /home/abc/public_html/app/code/core/Mage/Core/Model/App.php(1358): Gta_KolupadiRestrict_Model_Observer->cartevent(Object(Varien_Event_Observer))
#2 /home/abc/public_html/app/code/core/Mage/Core/Model/App.php(1337): Mage_Core_Model_App->_callObserverMethod(Object(Gta_KolupadiRestrict_Model_Observer), 'cartevent', Object(Varien_Event_Observer))
#3 /home/abc/public_html/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('checkout_cart_p...', Array)
#4 /home/abc/public_html/app/code/core/Mage/Checkout/Model/Cart.php(290): Mage::dispatchEvent('checkout_cart_p...', Array)
#5 /home/abc/public_html/app/code/local/Cmsmart/AjaxCart/controllers/IndexController.php(315): Mage_Checkout_Model_Cart->addProduct('5071', Array)
#6 /home/abc/public_html/app/code/local/Cmsmart/AjaxCart/controllers/IndexController.php(133): Cmsmart_AjaxCart_IndexController->tryaddAction(Object(Mage_Catalog_Model_Product), Array)
#7 /home/abc/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Cmsmart_AjaxCart_IndexController->indexAction()
#8 /home/abc/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('index')
#9 /home/abc/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#10 /home/abc/public_html/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#11 /home/abc/public_html/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#12 /home/abc/public_html/australia/index.php(93): Mage::run('australia', 'website')
#13 {main}";s:3:"url";s:100:"/ajaxcart/index/index/?form_key=MtlJbvKkqPQKCLJR&product=5071&related_product=&qty=1&_=1565155804563";s:11:"script_name";s:10:"/index.php";s:4:"skin";s:9:"australia";}
