fix(medusa): Missing withTransaction on calculateDiscountForLineItem (#3247)

.changeset/thin-fans-sneeze.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/medusa": patch
+---
+
+fix(medusa): Generate adjustment missing transaction on calculateDiscountForLineItem

packages/medusa/src/api/routes/store/carts/delete-line-item.ts

@@ -53,16 +53,18 @@ export default async (req, res) => {
   const cartService: CartService = req.scope.resolve("cartService")
 
   await manager.transaction(async (m) => {
+    const cartServiceTx = cartService.withTransaction(m)
+
     // Remove the line item
-    await cartService.withTransaction(m).removeLineItem(id, line_id)
+    await cartServiceTx.removeLineItem(id, line_id)
 
     // If the cart has payment sessions update these
-    const updated = await cartService.withTransaction(m).retrieve(id, {
+    const updated = await cartServiceTx.retrieve(id, {
       relations: ["payment_sessions"],
     })
 
     if (updated.payment_sessions?.length) {
-      await cartService.withTransaction(m).setPaymentSessions(id)
+      await cartServiceTx.setPaymentSessions(id)
     }
   })
 

packages/medusa/src/services/line-item-adjustment.ts

@@ -217,11 +217,14 @@ class LineItemAdjustmentService extends TransactionBaseService {
         return []
       }
 
+      const discountServiceTx = this.discountService.withTransaction(manager)
+
       const lineItemProduct = context.variant.product_id
 
-      const isValid = await this.discountService
+      const isValid = await discountServiceTx.validateDiscountForProduct(
-        .withTransaction(manager)
+        discount.rule_id,
-        .validateDiscountForProduct(discount.rule_id, lineItemProduct)
+        lineItemProduct
+      )
 
       // if discount is not valid for line item, then do nothing
       if (!isValid) {
@@ -230,7 +233,7 @@ class LineItemAdjustmentService extends TransactionBaseService {
 
       // In case of a generated line item the id is not available, it is mocked instead to be used for totals calculations
       lineItem.id = lineItem.id ?? new Date().getTime()
-      const amount = await this.discountService.calculateDiscountForLineItem(
+      const amount = await discountServiceTx.calculateDiscountForLineItem(
         discount.id,
         lineItem,
         calculationContextData