discounts

src/models/orders.rs

@@ -61,13 +61,15 @@ pub async fn place(ctx: &AppContext, items: &[(i32, i32)], details: Checkout) ->
             )));
         }
         currency = product.currency.clone();
-        subtotal += product.price_cents * i64::from(*qty);
+        // Snapshot the effective price (honouring any active discount).
+        let unit_price_cents = product.effective_price_cents();
+        subtotal += unit_price_cents * i64::from(*qty);
 
         let mut active = product.clone().into_active_model();
         active.stock = Set(product.stock - *qty);
         active.update(&txn).await?;
 
-        snapshots.push((product.id, product.name, product.price_cents, *qty));
+        snapshots.push((product.id, product.name, unit_price_cents, *qty));
     }
 
     let order = ActiveModel {