Discounts with combined conditions

The Discounts module (Modules → Discounts) supports percent and fixed discounts with flexible targeting: category plus brand, user plus product — any logical combination.

Creating a discount

1. Discount details — name, optional code, usage limit.
2. Method of calculation — percent or a fixed amount.
3. Discount type:
   • Gift certificate — a code with a balance;
   • Cumulative discount — grows with the customer's total purchases;
   • Conditions (combined) — the flexible type described below.
4. Allowed time — validity period or a constant discount.

How combined conditions work

Pick any of: category (optionally with subcategories), brands (several), products (search by ID / name / SKU), users (search by ID / name / e-mail), user groups, minimum order amount, registered customers only.

The rules combine like this:

• different conditions join with AND — "category Cigarettes AND brand Marlboro" applies only when both match;
• several values of one condition join with OR — two brands selected means "either of them".

Examples:

Goal	Conditions
−10% on a category for a loyal customer	category + user
−5% on two brands for orders over 1000	brand ×2 + min order
Fixed −50 on a product for registered users	product + "registered only"

Which discount applies

For every order line the system picks the single biggest matching discount — product-side discounts do not stack with each other. Then the product-side result competes with the customer's cumulative discount — again the bigger one wins. A gift certificate applies on top. A fixed discount never exceeds the line total.