fix(db-mongodb): localized dates being returned as date objects instead of strings (#12354)

Fixes https://github.com/payloadcms/payload/issues/12334

We weren't passing locale through to the Date transformer function so
localized dates were being read as objects instead of strings.

test/localization/collections/LocalizedDateFields/index.ts

@@ -0,0 +1,21 @@
+import type { CollectionConfig } from 'payload'
+
+import { localizedDateFieldsSlug } from '../../shared.js'
+
+export const LocalizedDateFields: CollectionConfig = {
+  slug: localizedDateFieldsSlug,
+  versions: {
+    drafts: true,
+  },
+  fields: [
+    {
+      type: 'date',
+      name: 'localizedDate',
+      localized: true,
+    },
+    {
+      type: 'date',
+      name: 'date',
+    },
+  ],
+}

test/localization/config.ts

@@ -11,6 +11,7 @@ import { devUser } from '../credentials.js'
 import { ArrayCollection } from './collections/Array/index.js'
 import { BlocksCollection } from './collections/Blocks/index.js'
 import { Group } from './collections/Group/index.js'
+import { LocalizedDateFields } from './collections/LocalizedDateFields/index.js'
 import { LocalizedDrafts } from './collections/LocalizedDrafts/index.js'
 import { LocalizedWithinLocalized } from './collections/LocalizedWithinLocalized/index.js'
 import { NestedArray } from './collections/NestedArray/index.js'
@@ -25,6 +26,7 @@ import {
   defaultLocale,
   englishTitle,
   hungarianLocale,
+  localizedDateFieldsSlug,
   localizedPostsSlug,
   localizedSortSlug,
   portugueseLocale,
@@ -64,6 +66,7 @@ export default buildConfigWithDefaults({
     NestedArray,
     NestedFields,
     LocalizedDrafts,
+    LocalizedDateFields,
     {
       admin: {
         listSearchableFields: 'name',
@@ -478,6 +481,14 @@ export default buildConfigWithDefaults({
       },
     })
 
+    await payload.create({
+      collection: localizedDateFieldsSlug,
+      data: {
+        localizedDate: new Date().toISOString(),
+        date: new Date().toISOString(),
+      },
+    })
+
     console.log('SEED 1')
 
     await payload.create({

test/localization/int.spec.ts

@@ -27,6 +27,7 @@ import {
   defaultLocale as englishLocale,
   englishTitle,
   hungarianLocale,
+  localizedDateFieldsSlug,
   localizedPostsSlug,
   localizedSortSlug,
   portugueseLocale,
@@ -431,6 +432,32 @@ describe('Localization', () => {
       })
     })
 
+    describe('Localized date', () => {
+      it('can create a localized date', async () => {
+        const document = await payload.create({
+          collection: localizedDateFieldsSlug,
+          data: {
+            localizedDate: new Date().toISOString(),
+            date: new Date().toISOString(),
+          },
+        })
+        expect(document.localizedDate).toBeTruthy()
+      })
+
+      it('data is typed as string', async () => {
+        const document = await payload.create({
+          collection: localizedDateFieldsSlug,
+          data: {
+            localizedDate: new Date().toISOString(),
+            date: new Date().toISOString(),
+          },
+        })
+
+        expect(typeof document.localizedDate).toBe('string')
+        expect(typeof document.date).toBe('string')
+      })
+    })
+
     describe('Localized Sort Count', () => {
       const expectedTotalDocs = 5
       const posts: LocalizedSort[] = []

test/localization/payload-types.ts

@@ -72,6 +72,7 @@ export interface Config {
     'nested-arrays': NestedArray;
     'nested-field-tables': NestedFieldTable;
     'localized-drafts': LocalizedDraft;
+    'localized-date-fields': LocalizedDateField;
     users: User;
     'localized-posts': LocalizedPost;
     'no-localized-fields': NoLocalizedField;
@@ -97,6 +98,7 @@ export interface Config {
     'nested-arrays': NestedArraysSelect<false> | NestedArraysSelect<true>;
     'nested-field-tables': NestedFieldTablesSelect<false> | NestedFieldTablesSelect<true>;
     'localized-drafts': LocalizedDraftsSelect<false> | LocalizedDraftsSelect<true>;
+    'localized-date-fields': LocalizedDateFieldsSelect<false> | LocalizedDateFieldsSelect<true>;
     users: UsersSelect<false> | UsersSelect<true>;
     'localized-posts': LocalizedPostsSelect<false> | LocalizedPostsSelect<true>;
     'no-localized-fields': NoLocalizedFieldsSelect<false> | NoLocalizedFieldsSelect<true>;
@@ -330,6 +332,18 @@ export interface LocalizedDraft {
   createdAt: string;
   _status?: ('draft' | 'published') | null;
 }
+/**
+ * This interface was referenced by `Config`'s JSON-Schema
+ * via the `definition` "localized-date-fields".
+ */
+export interface LocalizedDateField {
+  id: string;
+  localizedDate?: string | null;
+  date?: string | null;
+  updatedAt: string;
+  createdAt: string;
+  _status?: ('draft' | 'published') | null;
+}
 /**
  * This interface was referenced by `Config`'s JSON-Schema
  * via the `definition` "users".
@@ -713,6 +727,10 @@ export interface PayloadLockedDocument {
         relationTo: 'localized-drafts';
         value: string | LocalizedDraft;
       } | null)
+    | ({
+        relationTo: 'localized-date-fields';
+        value: string | LocalizedDateField;
+      } | null)
     | ({
         relationTo: 'users';
         value: string | User;
@@ -952,6 +970,17 @@ export interface LocalizedDraftsSelect<T extends boolean = true> {
   createdAt?: T;
   _status?: T;
 }
+/**
+ * This interface was referenced by `Config`'s JSON-Schema
+ * via the `definition` "localized-date-fields_select".
+ */
+export interface LocalizedDateFieldsSelect<T extends boolean = true> {
+  localizedDate?: T;
+  date?: T;
+  updatedAt?: T;
+  createdAt?: T;
+  _status?: T;
+}
 /**
  * This interface was referenced by `Config`'s JSON-Schema
  * via the `definition` "users_select".

test/localization/shared.ts

@@ -12,6 +12,7 @@ export const hungarianLocale = 'hu'
 
 // Slugs
 export const localizedPostsSlug = 'localized-posts'
+export const localizedDateFieldsSlug = 'localized-date-fields'
 export const withLocalizedRelSlug = 'with-localized-relationship'
 export const relationshipLocalizedSlug = 'relationship-localized'
 export const withRequiredLocalizedFields = 'localized-required'