Shopping cart rule selain bisa dibuat melalui backend, bisa juga dibuat melalui kode. Kode ini hanya bisa diaplikasikan didalam extension.

$rule = Mage::getModel('salesrule/rule');
$customerGroupIds = Mage::getModel('customer/group')->getCollection()->getAllIds();
$kodevoucher = "ONTHROUGH-USD-10K";
$rule->setName('PROMO USD 10K');
$rule->setDescription('onthrough.link promo USD 10K. Dapatkan harga spesial produk dengan nilai tukar USD 10RB.');
$rule->setFromDate("2016-02-01");
$rule->setToDate("2016-05-01");
$rule->setCouponCode($email);
$rule->setUsesPerCustomer(0);
$rule->setUsesPerCoupon(0);
$rule->setCustomerGroupIds($customerGroupIds);
$rule->setIsActive(1);
$rule->setConditionsSerialized('');
$rule->setActionsSerialized('');
$rule->setIsAdvanced(1);
$rule->setProductIds('');
$rule->setSortOrder(5);
$rule->setSimpleAction(Mage_SalesRule_Model_Rule::BY_PERCENT_ACTION);
$rule->setDiscountAmount('29');
$rule->setDiscountQty(0);
$rule->setDiscountStep(0);
$rule->setApplyToShipping(0);
$rule->setStopRulesProcessing(1);
$rule->setIsRss(0);
$rule->setWebsiteIds(array(1));
$rule->setCouponType(Mage_SalesRule_Model_Rule::COUPON_TYPE_SPECIFIC);
$rule->setStoreLabels(array('USD 10K'));
$productFoundCondition = Mage::getModel('salesrule/rule_condition_product_found')
				->setType('salesrule/rule_condition_product_found')
				->setValue(1) // 1 == FOUND
				->setAggregator('all');
			
$rule->getConditions()->addCondition($productFoundCondition);
$attributeSetCondition = Mage::getModel('salesrule/rule_condition_product')
					->setAggregator('all');  
$rule->getActions()->addCondition($attributeSetCondition);
$rule->save();

Demikian.