React-final-form: Empty form values are not included on submit

[ackvf]

Are you submitting a bug report or a feature request?

Maybe it is a feature, but I consider it a bug.

What is the current behavior?

Empty form values and pre-selected options are not included in the submit result.
Related issue https://github.com/final-form/react-final-form/issues/327

<Field name="favoriteColor" component="select">...</Field>
<Field name="description" component="input" />

// result
{
}

What is the expected behavior?

Expected is that every named field has a value in the result.

// this is the result of direct DOM access to form.elements
{
  favoriteColor: "#ABC",
  description: ""
}

Sandbox Link

Upon opening the sandbox, press "SUBMIT" without entering anything.
https://codesandbox.io/s/z66380078l

What's your environment?

Other information

[LavaToaster]

This looks related to #130

[prateek3255]

Any updates here?

[ackvf]

Would it make sense to merge the actual final-form values to form.elements so that the empty (default) fields are persisted?

[remorses]

It also prevents validation, the validation function passed to useField is not executed

[armellarcier]

796 is related. Actually it’s about the same issue.