Fix/cascading product variant deletion (#570)

* testing for deletes of variants when a product is deleted

* remove variants with products

* test using direct db query

* formatting

* removed unused imports

integration-tests/api/__tests__/admin/product.js

@@ -6,6 +6,7 @@ const { initDb, useDb } = require("../../../helpers/use-db")
 
 const adminSeeder = require("../../helpers/admin-seeder")
 const productSeeder = require("../../helpers/product-seeder")
+const { ProductVariant } = require("@medusajs/medusa")
 
 jest.setTimeout(50000)
 
@@ -1074,6 +1075,41 @@ describe("/admin/products", () => {
       )
     })
 
+    it("successfully deletes a product and variants", async () => {
+      const api = useApi()
+
+      const variantPre = await dbConnection.manager.findOne(ProductVariant, {
+        id: "test-variant",
+      })
+
+      expect(variantPre).not.toEqual(undefined)
+
+      const response = await api
+        .delete("/admin/products/test-product", {
+          headers: {
+            Authorization: "Bearer test_token",
+          },
+        })
+        .catch((err) => {
+          console.log(err)
+        })
+
+      expect(response.status).toEqual(200)
+
+      expect(response.data).toEqual(
+        expect.objectContaining({
+          id: "test-product",
+          deleted: true,
+        })
+      )
+
+      const variant = await dbConnection.manager.findOne(ProductVariant, {
+        id: "test-variant",
+      })
+
+      expect(variant).toEqual(undefined)
+    })
+
     it("successfully creates product with soft-deleted product handle and deletes it again", async () => {
       const api = useApi()
 

packages/medusa/src/services/product.js

@@ -468,7 +468,10 @@ class ProductService extends BaseService {
       const productRepo = manager.getCustomRepository(this.productRepository_)
 
       // Should not fail, if product does not exist, since delete is idempotent
-      const product = await productRepo.findOne({ where: { id: productId } })
+      const product = await productRepo.findOne(
+        { id: productId },
+        { relations: ["variants"] }
+      )
 
       if (!product) return Promise.resolve()