## Summary Closes #15800. Clicking **+ Add New** from a relation cell to create a **Task** or **Note** (e.g. from a custom object's Tasks/Notes section in the list view) throws: ``` Uncaught (in promise) Error: Should never occur, encountered unknown fields name in objectMetadataItem task ``` ### Root cause `useCreateOneRecord` computes a **sanitized** input (with `sanitizeRecordInput`, which strips fields that don't belong to the object) and sends it to the GraphQL mutation. But it still feeds the **raw** input to the optimistic cache computation: ```ts const sanitizedInput = { ...sanitizeRecordInput({ objectMetadataItem, recordInput }), id: idForCreation }; const optimisticRecordInput = computeOptimisticRecordFromInput({ ... recordInput: { ...computeOptimisticCreateRecordBaseRecordInput(objectMetadataItem), ...recordInput, // ← raw input, may contain fields unknown to the object id: idForCreation, }, ... }); // mutation uses the sanitized input: mutate({ variables: { input: sanitizedInput } }); ``` `computeOptimisticRecordFromInput` asserts that every input key maps to a field on the object and `throw`s otherwise. So when the create input carries a field the target object doesn't have (the relation-create path passes a `name`, but Task/Note use `title`), the optimistic step throws before the mutation ever runs. `useCreateManyRecords` does **not** have this problem — it already feeds the sanitized input to `computeOptimisticRecordFromInput`. ### Fix Feed the sanitized input to the optimistic computation in `useCreateOneRecord`, exactly as `useCreateManyRecords` does: ```ts recordInput: { ...computeOptimisticCreateRecordBaseRecordInput(objectMetadataItem), ...sanitizedInput, }, ``` This is safe and behavior-preserving for valid creates: `computeOptimisticRecordFromInput` only ever reads *known* fields (it iterates the object's field metadata); unknown input keys never contribute to the optimistic record — they only trip the invariant. Relations are resolved through their join columns, which sanitization keeps. ## Test plan - [x] `npx oxlint --type-aware` — passes on the changed files - [x] `npx oxfmt --check` — passes - [x] `tsc --noEmit` — no type errors in the changed files - [x] `npx jest computeOptimisticRecordFromInput` — passes, including a new case asserting that input which has been through `sanitizeRecordInput` no longer trips the "Should never occur, encountered unknown fields" invariant (the existing test already covers the raw input throwing) - [ ] Manual: from a custom object's Notes/Tasks relation, use **+ Add New** to create a Note/Task — no error, the record is created ### Note on test scope The crash only reproduces through the full relation-create flow with live metadata; at the hook level in jsdom the create resolves regardless, so a hook-level test would not guard the regression. The added test instead locks the underlying mechanism the fix relies on — that sanitized input is safe for `computeOptimisticRecordFromInput` — alongside the existing test that proves raw unknown fields throw. --------- Co-authored-by: Charles Bochet <charles@twenty.com>
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