# CanReadCellFn

Fields, allowed values, and APIs that use CanReadCellFn.

Canonical: https://grid.syidax.com/docs/types/CanReadCellFn/

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## Type definition

A question mark (?) marks an optional field; readonly marks a value you should not change directly. A union (|) accepts one of the listed forms. Functions are callbacks that Grid invokes at the relevant point.

```typescript
export type CanReadCellFn = (params: RbacCellReadParams) => boolean;
```

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## APIs using this type

- [canReadCell](https://grid.syidax.com/docs/options/canReadCell.md) — Synchronous permission callback determining whether a cell can be read. Use alongside server access control.

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## Related types

- [RbacCellReadParams](https://grid.syidax.com/docs/types/RbacCellReadParams.md)