Meta api for form fields

[harry-whorlow]

Continuation from the discussion #709. Listeners are implemented, however the meta field is yet to be started.

The proposal is to have the meta data available to the field component:

(example shamelessly ripped form #709)

<form.Field
  name="foo"
  meta={({ fieldApi }) => ({
    disabled: fieldApi.form.getFieldValue('someOtherField') == null,
    ...
  })}
  // or maybe expose values directly like form.Subscribe
  meta={({ values }) => ({
    disabled: values.someOtherField == null,
    ...
  })}
>
  {(field, meta) => <Comp
    disabled={meta.disabled}
    ...

You can subscribe to the meta from the Form but its pretty handy to have it available to the Field component.

I'm happy to give this a go, I just need the go ahead from a maintainer. 🤟

[fulopkovacs]

Hey 👋 , this sounds like a great idea. Personally, I prefer the second version (less verbose and more straight-forward). Are you still ready to create a PR? If yes, then this is the "go ahead"! ☺️☺️

Edit: Just to make it easy for people who visit this discussion later, this is the second version:

  // or maybe expose values directly like form.Subscribe
  meta={({ values }) => ({
    disabled: values.someOtherField == null,
    ...
  })}

[harry-whorlow]

Yeah, me too.

Absolutely, I'll start it this week, and hopefully have a PR ready by next weekend. 🫡

Thanks for the go ahead 🤘

[fulopkovacs]

Thank you for your enthusiasm! 🙌 Feel free to ping me in the comments when the PR is ready!

[harry-whorlow]

@fulopkovacs, l've left a couple questions on #1125. If you get a chance to take a look it would be appreciated 🤟

[fulopkovacs]

@fulopkovacs, l've left a couple questions on #1125. If you get a chance to take a look it would be appreciated 🤟

Awesome, thanks for your work! I'll look at them tomorrow, this week was pretty busy...

[harry-whorlow]

@fulopkovacs, no worries... thanks!