Fix useMutationWithMutationMode in optimistic and undoable mode may pass invalid parameters to the mutation

[djhi]

Problem

After #10857, when passing parameters at declaration time to a mutation hook in optimistic or undoable mode, those params may be modified by the side effects before the actual mutation is called.

For instance, if you pass the selectedIds from the ListContext to a useUpdateMany hook and use the useUnselectAll hook to reset the selectedIds in the onSuccess side effect, then the actual mutation will be called with an empty array of ids.

You can see the issue like this:

• https://stackblitz.com/github/marmelab/react-admin/tree/master/examples/simple
• select multiple rows and click the Reset views button
• check the dataProvider call in the console and check the call to updateMany
• beside, the views are back to their initial values once the mutation is actually called

Solution

Keep the params in an additional ref that is freezed once the mutate callback is called.

How To Test

• make run
• http://localhost:8080/#/posts
• select multiple rows and click the Reset views button
• check the dataProvider call in the console and ensure the correct ids were passed to updateMany

Additional Checks

• The PR targets master for a bugfix or a documentation fix, or next for a feature
• The PR includes unit tests (if not possible, describe why)

[Copilot]

Pull Request Overview

This PR fixes a bug where mutations using optimistic or undoable mode would receive stale parameters when side effects modify the parameters between the mutation call and execution. The fix introduces a new ref to preserve parameters at the exact moment the mutation is called.

• Adds paramsAtExecutionTimeRef to freeze parameters when mutate is called
• Updates all optimistic and undoable mutation paths to use the frozen parameters
• Preserves existing behavior for pessimistic mutations and declaration-time parameter updates

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
packages/ra-core/src/dataProvider/useMutationWithMutationMode.ts	Implements the core fix by adding parameter freezing logic and updating mutation execution paths
packages/ra-core/src/dataProvider/useMutationWithMutationMode.spec.tsx	Adds test coverage to verify parameters are preserved correctly in optimistic mode

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