Magento - get rule from coupon code

Question

I have to retrieve the rule associated to a coupon code in order to display in quote the discount percentage of that rule. the simplest way is to calculate directly from quo

Answer 1

To load a coupon by code, pass 'code' as 2nd param to load(). Then you can get the proper rule instance by using the rule_id value of your coupon instance:

$oCoupon = Mage::getModel('salesrule/coupon')->load($couponCode, 'code');
$oRule = Mage::getModel('salesrule/rule')->load($oCoupon->getRuleId());
var_dump($oRule->getData());