chore(link-modules): keep promotion alias (medusajs#12928)

* chore(link-modules): keep promotion alias

* chore: change promotion to promotions

Author: riqwan

.changeset/grumpy-comics-own.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/link-modules": patch
+---
+
+chore(link-modules): keep promotion alias

packages/admin/dashboard/src/routes/orders/order-detail/constants.ts

@@ -36,7 +36,7 @@ const DEFAULT_RELATIONS = [
   "*shipping_address",
   "*billing_address",
   "*sales_channel",
-  "*promotion",
+  "*promotions",
   "*shipping_methods",
   "*credit_lines",
   "*fulfillments",

packages/modules/link-modules/src/definitions/order-promotion.ts

@@ -48,6 +48,13 @@ export const OrderPromotion: ModuleJoinerConfig = {
           path: "promotion_link.promotions",
           isList: true,
         },
+        /**
+         * @deprecated use the promotions field alias instead
+         */
+        promotion: {
+          path: "promotion_link.promotions",
+          isList: true,
+        },
       },
       relationship: {
         serviceName: LINKS.OrderPromotion,
@@ -57,5 +64,15 @@ export const OrderPromotion: ModuleJoinerConfig = {
         isList: true,
       },
     },
+    {
+      serviceName: Modules.PROMOTION,
+      entity: "Promotion",
+      relationship: {
+        serviceName: LINKS.OrderPromotion,
+        primaryKey: "promotion_id",
+        foreignKey: "id",
+        alias: "order_link",
+      },
+    },
   ],
 }