Display collection of Shopping cart rules and products categories associated to each rule

Question

I want to check if there is a sales promotion on the product then stick the promotion label on that product on category list page. But I don\'t know how to loop through all

Answer 1

The rules are associated to all product for a website. There is no rules set for a specific products/categories from the database point of view. For each product in the cart, Magento will validate all the rules you have for a website. This operation is done in the class Mage_SalesRule_Model_Validator. The only way to solve your request is to extend the function process from this class (at least I think so :p).