fix(db-mongodb): strip deleted from the config blocks from the result (#12869)

If you (using the MongoDB adapter) delete a block from the payload
config, but still have some data with that block in the DB, you'd
receive in the admin panel an error like:
```
Block with type "cta" was found in block data, but no block with that type is defined in the config for field with schema path pages.blocks
```

Now, we remove those "unknown" blocks at the DB adapter level.

Co-authored-by: Dan Ribbens <dan.ribbens@gmail.com>

packages/db-mongodb/src/utilities/transform.ts

@@ -277,7 +277,9 @@ const stripFields = ({
               continue
             }
 
-            for (const data of localeData) {
+            let hasNull = false
+            for (let i = 0; i < localeData.length; i++) {
+              const data = localeData[i]
               let fields: FlattenedField[] | null = null
 
               if (field.type === 'array') {
@@ -286,11 +288,17 @@ const stripFields = ({
                 let maybeBlock: FlattenedBlock | undefined = undefined
 
                 if (field.blockReferences) {
-                  const maybeBlockReference = field.blockReferences.find(
+                  const maybeBlockReference = field.blockReferences.find((each) => {
-                    (each) => typeof each === 'object' && each.slug === data.blockType,
+                    const slug = typeof each === 'string' ? each : each.slug
-                  )
+                    return slug === data.blockType
-                  if (maybeBlockReference && typeof maybeBlockReference === 'object') {
+                  })
-                    maybeBlock = maybeBlockReference
+
+                  if (maybeBlockReference) {
+                    if (typeof maybeBlockReference === 'object') {
+                      maybeBlock = maybeBlockReference
+                    } else {
+                      maybeBlock = config.blocks?.find((each) => each.slug === maybeBlockReference)
+                    }
                   }
                 }
 
@@ -300,6 +308,9 @@ const stripFields = ({
 
                 if (maybeBlock) {
                   fields = maybeBlock.flattenedFields
+                } else {
+                  localeData[i] = null
+                  hasNull = true
                 }
               }
 
@@ -310,6 +321,10 @@ const stripFields = ({
               stripFields({ config, data, fields, reservedKeys })
             }
 
+            if (hasNull) {
+              fieldData[localeKey] = localeData.filter(Boolean)
+            }
+
             continue
           } else {
             stripFields({ config, data: localeData, fields: field.flattenedFields, reservedKeys })
@@ -323,7 +338,10 @@ const stripFields = ({
           continue
         }
 
-        for (const data of fieldData) {
+        let hasNull = false
+
+        for (let i = 0; i < fieldData.length; i++) {
+          const data = fieldData[i]
           let fields: FlattenedField[] | null = null
 
           if (field.type === 'array') {
@@ -332,12 +350,17 @@ const stripFields = ({
             let maybeBlock: FlattenedBlock | undefined = undefined
 
             if (field.blockReferences) {
-              const maybeBlockReference = field.blockReferences.find(
+              const maybeBlockReference = field.blockReferences.find((each) => {
-                (each) => typeof each === 'object' && each.slug === data.blockType,
+                const slug = typeof each === 'string' ? each : each.slug
-              )
+                return slug === data.blockType
+              })
 
-              if (maybeBlockReference && typeof maybeBlockReference === 'object') {
+              if (maybeBlockReference) {
-                maybeBlock = maybeBlockReference
+                if (typeof maybeBlockReference === 'object') {
+                  maybeBlock = maybeBlockReference
+                } else {
+                  maybeBlock = config.blocks?.find((each) => each.slug === maybeBlockReference)
+                }
               }
             }
 
@@ -347,6 +370,9 @@ const stripFields = ({
 
             if (maybeBlock) {
               fields = maybeBlock.flattenedFields
+            } else {
+              fieldData[i] = null
+              hasNull = true
             }
           }
 
@@ -357,6 +383,10 @@ const stripFields = ({
           stripFields({ config, data, fields, reservedKeys })
         }
 
+        if (hasNull) {
+          data[field.name] = fieldData.filter(Boolean)
+        }
+
         continue
       } else {
         stripFields({ config, data: fieldData, fields: field.flattenedFields, reservedKeys })

test/access-control/config.ts

@@ -1,4 +1,4 @@
-/* eslint-disable no-restricted-exports */
+ 
 import { fileURLToPath } from 'node:url'
 import path from 'path'
 const filename = fileURLToPath(import.meta.url)

test/admin-root/app/(payload)/importMap.js

@@ -1,5 +1,5 @@
 import { CustomView as CustomView_c4f0e2747eca2be436a06a63cea31567 } from '../../CustomView/index.js'
 
 export const importMap = {
-  "/CustomView/index.js#CustomView": CustomView_c4f0e2747eca2be436a06a63cea31567
+  '/CustomView/index.js#CustomView': CustomView_c4f0e2747eca2be436a06a63cea31567,
 }

test/database/int.spec.ts

@@ -2727,6 +2727,53 @@ describe('database', () => {
     expect(res.blocks[0]?.nested[0]?.nested).toHaveLength(0)
   })
 
+  it('should ignore blocks that exist in the db but not in the config', async () => {
+    // not possible w/ SQL anyway
+    // eslint-disable-next-line jest/no-conditional-in-test
+    if (payload.db.name !== 'mongoose') {
+      return
+    }
+
+    const res = await payload.db.collections['blocks-docs']?.collection.insertOne({
+      testBlocks: [
+        {
+          id: '1',
+          blockType: 'cta',
+          text: 'valid block',
+        },
+        {
+          id: '2',
+          blockType: 'cta_2',
+          text: 'non-valid block',
+        },
+      ],
+      testBlocksLocalized: {
+        en: [
+          {
+            id: '1',
+            blockType: 'cta',
+            text: 'valid block',
+          },
+          {
+            id: '2',
+            blockType: 'cta_2',
+            text: 'non-valid block',
+          },
+        ],
+      },
+    })
+
+    const doc = await payload.findByID({
+      collection: 'blocks-docs',
+      id: res?.insertedId?.toHexString() as string,
+      locale: 'en',
+    })
+    expect(doc.testBlocks).toHaveLength(1)
+    expect(doc.testBlocks[0].id).toBe('1')
+    expect(doc.testBlocksLocalized).toHaveLength(1)
+    expect(doc.testBlocksLocalized[0].id).toBe('1')
+  })
+
   it('should CRUD with blocks as JSON in SQL adapters', async () => {
     // eslint-disable-next-line jest/no-conditional-in-test
     if (!('drizzle' in payload.db)) {

test/database/up-down-migration/migrations/20250624_214621.json

@@ -1,5 +1,5 @@
 {
-  "id": "e7129a5b-a5af-490a-8ad9-318e3caeca26",
+  "id": "a3dd8ca0-5e09-407b-9178-e0ff7f15da59",
   "prevId": "00000000-0000-0000-0000-000000000000",
   "version": "7",
   "dialect": "postgresql",

test/database/up-down-migration/migrations/index.ts

@@ -1,9 +1,9 @@
-import * as migration_20250624_142145 from './20250624_142145.js'
+import * as migration_20250624_214621 from './20250624_214621.js'
 
 export const migrations = [
   {
-    up: migration_20250624_142145.up,
+    up: migration_20250624_214621.up,
-    down: migration_20250624_142145.down,
+    down: migration_20250624_214621.down,
-    name: '20250624_142145',
+    name: '20250624_214621',
   },
 ]