fix: join field with the target relationship inside localized array (#10621)

Fixes https://github.com/payloadcms/payload/issues/10356

test/joins/collections/Categories.ts

@@ -109,6 +109,12 @@ export const Categories: CollectionConfig = {
       collection: 'posts',
       on: 'array.category',
     },
+    {
+      name: 'localizedArrayPosts',
+      type: 'join',
+      collection: 'posts',
+      on: 'localizedArray.category',
+    },
     {
       name: 'blocksPosts',
       type: 'join',

test/joins/collections/Posts.ts

@@ -104,6 +104,18 @@ export const Posts: CollectionConfig = {
         },
       ],
     },
+    {
+      name: 'localizedArray',
+      type: 'array',
+      localized: true,
+      fields: [
+        {
+          name: 'category',
+          type: 'relationship',
+          relationTo: categoriesSlug,
+        },
+      ],
+    },
     {
       name: 'blocks',
       type: 'blocks',

test/joins/int.spec.ts

@@ -115,6 +115,7 @@ describe('Joins Field', () => {
           camelCaseCategory: category.id,
         },
         array: [{ category: category.id }],
+        localizedArray: [{ category: category.id }],
         blocks: [{ blockType: 'block', category: category.id }],
       })
     }
@@ -214,6 +215,16 @@ describe('Joins Field', () => {
     expect(categoryWithPosts.arrayPosts.docs).toBeDefined()
   })
 
+  it('should populate joins with localized array relationships', async () => {
+    const categoryWithPosts = await payload.findByID({
+      id: category.id,
+      collection: categoriesSlug,
+    })
+
+    expect(categoryWithPosts.localizedArrayPosts.docs).toBeDefined()
+    expect(categoryWithPosts.localizedArrayPosts.docs).toHaveLength(10)
+  })
+
   it('should populate joins with blocks relationships', async () => {
     const categoryWithPosts = await payload.findByID({
       id: category.id,

test/joins/payload-types.ts

@@ -41,6 +41,7 @@ export interface Config {
       'group.relatedPosts': 'posts';
       'group.camelCasePosts': 'posts';
       arrayPosts: 'posts';
+      localizedArrayPosts: 'posts';
       blocksPosts: 'posts';
       polymorphic: 'posts';
       polymorphics: 'posts';
@@ -199,6 +200,12 @@ export interface Post {
         id?: string | null;
       }[]
     | null;
+  localizedArray?:
+    | {
+        category?: (string | null) | Category;
+        id?: string | null;
+      }[]
+    | null;
   blocks?:
     | {
         category?: (string | null) | Category;
@@ -272,6 +279,10 @@ export interface Category {
     docs?: (string | Post)[] | null;
     hasNextPage?: boolean | null;
   } | null;
+  localizedArrayPosts?: {
+    docs?: (string | Post)[] | null;
+    hasNextPage?: boolean | null;
+  } | null;
   blocksPosts?: {
     docs?: (string | Post)[] | null;
     hasNextPage?: boolean | null;
@@ -649,6 +660,12 @@ export interface PostsSelect<T extends boolean = true> {
         category?: T;
         id?: T;
       };
+  localizedArray?:
+    | T
+    | {
+        category?: T;
+        id?: T;
+      };
   blocks?:
     | T
     | {
@@ -680,6 +697,7 @@ export interface CategoriesSelect<T extends boolean = true> {
         camelCasePosts?: T;
       };
   arrayPosts?: T;
+  localizedArrayPosts?: T;
   blocksPosts?: T;
   polymorphic?: T;
   polymorphics?: T;