Thomas Trompette
a0281f635b
Fixes #23305. Removing a junction relation soft-deletes the intermediate junction record. Re-adding the same relation created a brand new record, which the composite unique index on the junction object (e.g. `personId` + `companyId`) rejected with "This record already exists". `useUpdateJunctionRelationFromCell` now creates the junction record through `useCreateManyRecords` with `upsert: true`. The server matches on the unique index with `withDeleted()` and clears `deletedAt` on the matched row instead of inserting. ## This revives, it does not create Worth being explicit, because it is a deliberate trade and not obvious from the diff. When a soft-deleted row exists for the pair, the user gets that row back. Same id, same `createdAt`, same `createdBy`, and anything attached to it (notes, files, and any fields the app added to the junction object). Verified on a dev instance: after re-adding a link through the picker, the row still reported a creation date from days earlier. That is fine for a pure link. It is a lie for a junction that carries data, for instance a `PersonCompanyRelationship` with a role and dates. The alternative designs are hard-deleting on detach (needs `canDestroyObjectRecords` on the junction object, which most roles do not grant) and partial unique indexes (needs `indexWhereClause` exposed to app-declared indexes, which the SDK does not support today). Both are larger changes. This one unblocks affected apps without requiring anything from them. Note that upsert conflict detection ignores `indexWhereClause`, so shipping partial indexes later would not change this behaviour on its own. ## Why the id handling changed The hook no longer sends a client-generated id. Under upsert the server decides which row you get, so the id in the input would be discarded. The optimistic store entry still uses a local id so the chip appears immediately, then adopts the persisted id once the mutation resolves. Without that, a revive left an id in the store that exists nowhere on the server, and the next removal failed with "This record does not exist or has been deleted". Supersedes #23365, which took the same approach but added `$upsert` to the shared `createOne` mutation. That capability already exists per call on `createMany`, and widening the shared document broke the `useCreateOneRecordMutation` and `useCreateOneRecord` tests. ## Testing Verified end to end on a dev instance with a junction object carrying a non-partial composite unique index, since the dev seed does not create one and the bug cannot reproduce without it: - before: re-adding after a removal fails with "This record already exists" - after: the original row is restored, `deletedAt` cleared, one row throughout, and removing again in the same session works, with no GraphQL errors Added an integration test for the path this depends on: a soft-deleted record matched on its unique fields alone, with no id in the input. The existing coverage only exercised upsert by explicit id. ## Known gaps, deliberately not addressed here **Toggling a link off while its creation is still in flight.** The store id is provisional until the mutation returns, so a removal issued inside that window deletes an id the server never received. Reproduced by stalling the create and clicking remove during it: `CombinedGraphQLErrors: Record not found`, and the link stays active despite the user removing it. The window is one mutation round trip. Left for a follow-up; the likely fix is a per-record operation queue so adds and removes on a field run in click order. **Junction objects with no unique index.** Remove then re-add still creates a duplicate row there, on this branch as on main, because conflict detection is driven by unique indexes. --------- Co-authored-by: Shinu Cherian <129690295+Shinu-Cherian@users.noreply.github.com>
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