fix(medusa): Support fields param in list-variants (#5053)

* fix(medusa): Support fields param in list-variants

* Create cuddly-pigs-tease.md

* address pr comments

.changeset/cuddly-pigs-tease.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/medusa": patch
+---
+
+fix(medusa): Support `fields` param in list-variants

integration-tests/api/__tests__/store/product-variants.js

@@ -379,5 +379,38 @@ describe("/store/variants", () => {
         ],
       })
     })
+
+    it("should list variants with id using fields param", async () => {
+      const api = useApi()
+
+      const response = await api
+        .get("/store/variants?fields=id&expand=&limit=1")
+        .catch((err) => console.log(err))
+
+      expect(response.data).toEqual({
+        variants: [
+          {
+            id: expect.any(String),
+            created_at: expect.any(String),
+            // tax rates, prices, and calculated prices are added regardless of fields and expand
+            calculated_price: null,
+            calculated_price_incl_tax: null,
+            calculated_tax: null,
+            original_price: null,
+            original_price_incl_tax: null,
+            original_tax: null,
+            tax_rates: null,
+            prices: expect.arrayContaining([
+              expect.objectContaining({
+                id: expect.any(String),
+                variant_id: expect.any(String),
+                created_at: expect.any(String),
+                updated_at: expect.any(String),
+              }),
+            ]),
+          },
+        ],
+      })
+    })
   })
 })

packages/medusa/src/api/routes/store/variants/index.ts

@@ -1,13 +1,13 @@
 import middlewares, { transformStoreQuery } from "../../../middlewares"
 
-import { PricedVariant } from "../../../../types/pricing"
 import { Router } from "express"
-import { StoreGetVariantsParams } from "./list-variants"
-import { StoreGetVariantsVariantParams } from "./get-variant"
+import { PricedVariant } from "../../../../types/pricing"
 import { extendRequestParams } from "../../../middlewares/publishable-api-key/extend-request-params"
-import { validateProductVariantSalesChannelAssociation } from "../../../middlewares/publishable-api-key/validate-variant-sales-channel-association"
 import { validateSalesChannelParam } from "../../../middlewares/publishable-api-key/validate-sales-channel-param"
+import { validateProductVariantSalesChannelAssociation } from "../../../middlewares/publishable-api-key/validate-variant-sales-channel-association"
 import { withDefaultSalesChannel } from "../../../middlewares/with-default-sales-channel"
+import { StoreGetVariantsVariantParams } from "./get-variant"
+import { StoreGetVariantsParams } from "./list-variants"
 
 const route = Router()
 
@@ -91,5 +91,6 @@ export type StoreVariantsListRes = {
   variants: PricedVariant[]
 }
 
-export * from "./list-variants"
 export * from "./get-variant"
+export * from "./list-variants"
+

packages/medusa/src/api/routes/store/variants/list-variants.ts

@@ -1,3 +1,4 @@
+import { IsInt, IsOptional, IsString } from "class-validator"
 import {
   CartService,
   PricingService,
@@ -5,17 +6,12 @@ import {
   ProductVariantService,
   RegionService,
 } from "../../../../services"
-import { IsInt, IsOptional, IsString } from "class-validator"
 
-import { FilterableProductVariantProps } from "../../../../types/product-variant"
-import { IsType } from "../../../../utils/validators/is-type"
-import { MedusaError } from "@medusajs/utils"
+import { Type } from "class-transformer"
 import { NumericalComparisonOperator } from "../../../../types/common"
 import { PriceSelectionParams } from "../../../../types/price-selection"
-import { Type } from "class-transformer"
-import { defaultStoreVariantRelations } from "."
-import { omit } from "lodash"
 import { validator } from "../../../../utils/validator"
+import { IsType } from "../../../../utils/validators/is-type"
 
 /**
  * @oas [get] /store/variants
@@ -130,40 +126,22 @@ import { validator } from "../../../../utils/validator"
  */
 export default async (req, res) => {
   const validated = await validator(StoreGetVariantsParams, req.query)
-  const { expand, offset, limit } = validated
-
-  let expandFields: string[] = []
-  if (expand) {
-    expandFields = expand.split(",")
-  }
 
   const customer_id = req.user?.customer_id
 
-  const listConfig = {
-    relations: expandFields.length
-      ? expandFields
-      : defaultStoreVariantRelations,
-    skip: offset,
-    take: limit,
-  }
-
-  const filterableFields: FilterableProductVariantProps = omit(validated, [
-    "ids",
-    "limit",
-    "offset",
-    "expand",
-    "cart_id",
-    "region_id",
-    "currency_code",
-    "sales_channel_id",
-  ])
+  let {
+    cart_id,
+    region_id,
+    currency_code,
+    sales_channel_id,
+    ids,
+    ...filterableFields
+  } = req.filterableFields
 
   if (validated.ids) {
-    filterableFields.id = validated.ids.split(",")
+    filterableFields["id"] = validated.ids.split(",")
   }
 
-  let sales_channel_id = validated.sales_channel_id
-
   if (req.publishableApiKeyScopes?.sales_channel_ids.length === 1) {
     sales_channel_id = req.publishableApiKeyScopes.sales_channel_ids[0]
   }
@@ -177,7 +155,10 @@ export default async (req, res) => {
     req.scope.resolve("productVariantInventoryService")
   const regionService: RegionService = req.scope.resolve("regionService")
 
-  const rawVariants = await variantService.list(filterableFields, listConfig)
+  const rawVariants = await variantService.list(
+    filterableFields,
+    req.listConfig
+  )
 
   let regionId = validated.region_id
   let currencyCode = validated.currency_code