defaultProps recommended for label of custom field

[hco]

On https://marmelab.com/react-admin/Fields.html#writing-your-own-field-component, it is recommended to use defaultProps for having a default label for a custom field.

As defaultProps for function components do not exist anymore, another way should be recommended.

Other information:
Mention on defaultProps being removed: https://react.dev/blog/2024/04/25/react-19-upgrade-guide#removed-deprecated-react-apis

[fzaninotto]

Thanks for pointing this. I'm marking it as a documentation issue.

We won't need defaultProps for labellingcustom fields in a data grid with the new DataTable component. We will need to use the same approach for the Show layouts, and then we can stop recommending setting the label on Field components altogether.

[dhfra21]

I've updated the documentation to remove the defaultProps pattern for custom field components. The changes include:

1. Updated the FullNameField example in Fields.md to use parameter destructuring with source and ...props instead of label and ...props
2. Updated the ColoredNumberField example in SX.md to:
   Remove the defaultProps assignment
   Use parameter destructuring with source and ...props
   Pass the source prop explicitly to the underlying component
   Should I proceed with a PR ?

[fzaninotto]

As explained in #10699, what you propose doesn't work.

[dhfra21]

got it! i'll look for another solution.