a62cdc89d8
In this case, the `blockType` property is created on the server, but -
prior to this fix - was discarded on the client in
[`fieldReducer.ts`](https://github.com/payloadcms/payload/blob/main/packages/ui/src/forms/Form/fieldReducer.ts#L186-L198)
via
[`mergerServerFormState.ts`](b9832f40e4/packages/ui/src/forms/Form/mergeServerFormState.ts (L29-L31)),
because the field's path neither existed in the client's form state, nor
was it marked as `addedByServer`.
This caused later calls to POST requests to form state to send without
the `blockType` key for block rows, which in turn caused
`addFieldStatePromise.ts` to throw the following error:
```
Block with type "undefined" was found in block data, but no block with that type is defined in the config for field with schema path ${schemaPath}.
```
This prevented the client side form state update from completing, and if
the form state was saved, broke the document.
This is a follow-up to #12131, which treated the symptom, but not the
cause. The original issue seems to have been introduced in
https://github.com/payloadcms/payload/releases/tag/v3.34.0. It's unclear
to me whether this issue is connected to block E2E tests having been
disabled in the same release in
https://github.com/payloadcms/payload/pull/11988.
## How to reproduce
### Collection configuration
```ts
const RICH_TEXT_BLOCK_TYPE = 'richTextBlockType'
const RichTextBlock: Block = {
slug: RICH_TEXT_BLOCK_TYPE,
interfaceName: 'RichTextBlock',
fields: [
{
name: 'richTextBlockField',
label: 'Rich Text Field in Block Field',
type: 'richText',
editor: lexicalEditor({}),
required: true,
},
],
}
const MyCollection: CollectionConfig = {
slug: 'my-collection-slug,
fields: [
{
name: 'arrayField',
label: 'Array Field',
type: 'array',
fields: [
{
name: 'blockField',
type: 'blocks',
blocks: [RichTextBlock],
required: true,
},
],
},
]
}
export default MyCollection
```
### Steps
- Press "Add Array Field"
--> ✅ 1st block with rich text is added
- Press "Add Array Field" a 2nd time
### Result
- 🛑 2nd block is indefinitely in loading state (side-note: the form UI
should preferably explicitly indicate the error).
- 🛑 If saving the document, it is corrupted and will only show a blank
page (also not indicating any error).
Client side:
<img width="1268" alt="Untitled"
src="https://github.com/user-attachments/assets/4b32fdeb-af76-41e2-9181-d2dbd686618a"
/>
API error:
<img width="1272" alt="image"
src="https://github.com/user-attachments/assets/35dc65f7-88ac-4397-b8d4-353bcf6a4bfd"
/>
Client side, when saving and re-opening document (API error of `GET
/admin/collections/${myCollection}/${documentId}` is the same (arguably
the HTTP response status code shouldn't be `200`)):
<img width="1281" alt="image"
src="https://github.com/user-attachments/assets/2e916eb5-6f10-4e82-9b84-1dc41db21d47"
/>
### Result after fix
- `blockType` is sent from the client to the server.
- ✅ 2nd block with rich text is added.
- ✅ Document does not break when saving & re-opening.
<img width="1277" alt="Untitled"
src="https://github.com/user-attachments/assets/84d0c88b-64b2-48c4-864d-610d524ac8fc"
/>
---------
Co-authored-by: Jacob Fletcher <jacobsfletch@gmail.com>
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Important
🎉 We've released 3.0! Star this repo or keep an eye on it to follow along.
Payload is the first-ever Next.js native CMS that can install directly in your existing /app folder. It's the start of a new era for headless CMS.
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You can see more examples at:
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