docs: fixes to wishlist plugin guide (#11551)

www/apps/resources/app/plugins/guides/wishlist/page.mdx

@@ -933,6 +933,12 @@ The workflow to add an item to a wishlist has the following steps:
         depth: 1,
         link: "/references/helper-steps/useQueryGraphStep"
       },
+      {
+        type: "step",
+        name: "validateWishlistExistsStep",
+        description: "Validate that the customer's wishlist exists.",
+        depth: 1
+      },
       {
         type: "step",
         name: "validateWishlistSalesChannelStep",
@@ -965,9 +971,42 @@ The workflow to add an item to a wishlist has the following steps:
 
 The `useQueryGraphStep` is from Medusa's workflows package. So, you'll only implement the other steps.
 
+#### validateWishlistExistsStep
+
+The second step in the workflow validates that the customer's wishlist, retrieved in the first step, exists.
+
+To create the step, create the file `src/workflows/steps/validate-wishlist-exists.ts` with the following content:
+
+![Directory structure after adding the step file](https://res.cloudinary.com/dza7lstvk/image/upload/v1740071251/Medusa%20Resources/wishlist-29_bq6kcn.jpg)
+
+```ts title="src/workflows/steps/validate-wishlist-exists.ts"
+import { MedusaError } from "@medusajs/framework/utils"
+import { createStep } from "@medusajs/framework/workflows-sdk"
+import { InferTypeOf } from "@medusajs/framework/types"
+import { Wishlist } from "../../modules/wishlist/models/wishlist"
+
+type Input = {
+  wishlists?: InferTypeOf<typeof Wishlist>[]
+}
+
+export const validateWishlistExistsStep = createStep(
+  "validate-wishlist-exists",
+  async (input: Input) => {
+    if (!input.wishlists?.length) {
+      throw new MedusaError(
+        MedusaError.Types.NOT_FOUND,
+        "No wishlist found for this customer"
+      )
+    }
+  }
+)
+```
+
+This step receives an array of wishlists and throws an error if it's empty. You'll use this to stop the workflow's execution if the customer doesn't have a wishlist.
+
 #### validateWishlistSalesChannelStep
 
-The second step in the workflow validates that the wishlist belongs to the sales channel specified in the input.
+The third step in the workflow validates that the wishlist belongs to the sales channel specified in the input.
 
 To create the step, create the file `src/workflows/steps/validate-wishlist-sales-channel.ts` with the following content:
 
@@ -1079,7 +1118,7 @@ This step receives the variant ID, sales channel ID, and wishlist object as inpu
 
 #### createWishlistItemStep
 
-The fourth step in the workflow creates a wishlist item for the specified variant in the wishlist.
+The fifth step in the workflow creates a wishlist item for the specified variant in the wishlist.
 
 Create the file `src/workflows/steps/create-wishlist-item.ts` with the following content:
 
@@ -1133,12 +1172,13 @@ You can now add the `createWishlistItemWorkflow` to the plugin. Create the file
 ![Directory structure after adding the workflow file](https://res.cloudinary.com/dza7lstvk/image/upload/v1737470660/Medusa%20Resources/wishlist-16_ovujwp.jpg)
 
 export const createWishlistItemWorkflowHighlights = [
-  ["16", "useQueryGraphStep", "Retrieve the wishlist of the specified customer."],
+  ["17", "useQueryGraphStep", "Retrieve the wishlist of the specified customer."],
-  ["27", "validateWishlistSalesChannelStep", "Validate that the wishlist belongs to the specified sales channel."],
+  ["25", "validateWishlistExistsStep", "Validate that the customer has a wishlist."],
-  ["33", "validateVariantWishlistStep", "Validate that the specified variant is not already in the wishlist."],
+  ["29", "validateWishlistSalesChannelStep", "Validate that the wishlist belongs to the specified sales channel."],
-  ["39", "createWishlistItemStep", "Create the wishlist item."],
+  ["35", "validateVariantWishlistStep", "Validate that the specified variant is not already in the wishlist."],
-  ["45", "useQueryGraphStep", "Retrieve the wishlist again with the new item added."],
+  ["41", "createWishlistItemStep", "Create the wishlist item."],
-  ["54", "wishlist", "Return the wishlist with the new item."]
+  ["47", "useQueryGraphStep", "Retrieve the wishlist again with the new item added."],
+  ["56", "wishlist", "Return the wishlist with the new item."]
 ]
 
 ```ts title="src/workflows/create-wishlist-item.ts" collapsibleLines="1-6" expandButtonLabel="Show Imports" highlights={createWishlistItemWorkflowHighlights}
@@ -1147,6 +1187,7 @@ import { useQueryGraphStep } from "@medusajs/medusa/core-flows"
 import { validateWishlistSalesChannelStep } from "./steps/validate-wishlist-sales-channel"
 import { createWishlistItemStep } from "./steps/create-wishlist-item"
 import { validateVariantWishlistStep } from "./steps/validate-variant-wishlist"
+import { validateWishlistExistsStep } from "./steps/validate-wishlist-exists"
 
 type CreateWishlistItemWorkflowInput = {
   variant_id: string
@@ -1163,9 +1204,10 @@ export const createWishlistItemWorkflow = createWorkflow(
       filters: {
         customer_id: input.customer_id,
       },
-      options: {
+    })
-        throwIfKeyNotFound: true,
+
-      },
+    validateWishlistExistsStep({
+      wishlists
     })
 
     validateWishlistSalesChannelStep({
@@ -1406,6 +1448,12 @@ The workflow to remove an item from a wishlist has the following steps:
         depth: 1,
         link: "/references/helper-steps/useQueryGraphStep"
       },
+      {
+        type: "step",
+        name: "validateWishlistExistsStep",
+        description: "Validate that the customer's wishlist exists.",
+        depth: 1
+      },
       {
         type: "step",
         name: "validateItemInWishlistStep",
@@ -1430,7 +1478,7 @@ The workflow to remove an item from a wishlist has the following steps:
   hideLegend
 />
 
-The `useQueryGraphStep` is from Medusa's workflows package. So, you'll only implement the other steps.
+The `useQueryGraphStep` is from Medusa's workflows package, and you implemented the `validateWishlistExistsStep` [previously](#validatewishlistexistsstep) . So, you'll only implement the other steps.
 
 #### validateItemInWishlistStep
 
@@ -1524,11 +1572,12 @@ You can now add the `deleteWishlistItemWorkflow` to the plugin. Create the file
 ![Directory structure after adding the workflow file](https://res.cloudinary.com/dza7lstvk/image/upload/v1737474872/Medusa%20Resources/wishlist-22_wt1g36.jpg)
 
 export const deleteWishlistItemWorkflowHighlights = [
-  ["14", "useQueryGraphStep", "Retrieve the wishlist of a customer."],
+  ["15", "useQueryGraphStep", "Retrieve the wishlist of a customer."],
-  ["25", "validateItemInWishlistStep", "Validate that the item is in the customer's wishlist."],
+  ["23", "validateWishlistExistsStep", "Validate that the customer has a wishlist."],
-  ["30", "deleteWishlistItemStep", "Delete the wishlist item."],
+  ["27", "validateItemInWishlistStep", "Validate that the item is in the customer's wishlist."],
-  ["33", "useQueryGraphStep", "Retrieve the wishlist again with the item removed."],
+  ["32", "deleteWishlistItemStep", "Delete the wishlist item."],
-  ["42", "wishlist", "Return the wishlist without the removed item."]
+  ["35", "useQueryGraphStep", "Retrieve the wishlist again with the item removed."],
+  ["44", "wishlist", "Return the wishlist without the removed item."]
 ]
 
 ```ts title="src/workflows/delete-wishlist-item.ts" highlights={deleteWishlistItemWorkflowHighlights}
@@ -1536,6 +1585,7 @@ import { createWorkflow, WorkflowResponse } from "@medusajs/framework/workflows-
 import { deleteWishlistItemStep } from "./steps/delete-wishlist-item"
 import { useQueryGraphStep } from "@medusajs/medusa/core-flows"
 import { validateItemInWishlistStep } from "./steps/validate-item-in-wishlist"
+import { validateWishlistExistsStep } from "./steps/validate-wishlist-exists"
 
 type DeleteWishlistItemWorkflowInput = {
   wishlist_item_id: string
@@ -1551,9 +1601,10 @@ export const deleteWishlistItemWorkflow = createWorkflow(
       filters: {
         customer_id: input.customer_id,
       },
-      options: {
+    })
-        throwIfKeyNotFound: true,
+    
-      },
+    validateWishlistExistsStep({
+      wishlists
     })
 
     validateItemInWishlistStep({
@@ -1568,7 +1619,7 @@ export const deleteWishlistItemWorkflow = createWorkflow(
       entity: "wishlist",
       fields: ["*", "items.*", "items.product_variant.*"],
       filters: {
-        id: wishlists[0].wishlist.id,
+        id: wishlists[0].id,
       },
     }).config({ name: "refetch-wishlist" })
 

www/apps/resources/generated/edit-dates.mjs

@@ -5861,7 +5861,7 @@ export const generatedEditDates = {
   "references/core_flows/types/core_flows.ThrowUnlessPaymentCollectionNotePaidInput/page.mdx": "2025-01-17T16:43:25.819Z",
   "references/core_flows/types/core_flows.ValidatePaymentsRefundStepInput/page.mdx": "2025-01-17T16:43:26.128Z",
   "references/core_flows/types/core_flows.ValidateRefundStepInput/page.mdx": "2025-01-17T16:43:26.124Z",
-  "app/plugins/guides/wishlist/page.mdx": "2025-02-11T14:25:46.734Z",
+  "app/plugins/guides/wishlist/page.mdx": "2025-02-20T17:13:30.276Z",
   "app/plugins/page.mdx": "2025-01-22T09:36:37.745Z",
   "app/admin-components/components/data-table/page.mdx": "2025-01-22T16:01:01.279Z",
   "references/order_models/variables/order_models.Order/page.mdx": "2025-01-27T11:43:58.788Z",