Access required field on a field in the schema

Once the schema is formed with shape(), it would be nice to be able to look a field up and see if it has ‘required’ set on it.

The idea being that I can use the information coded in the schema to set the required field on a MUI TextField.

I see that I can dive into the object and grab the data out of the schema.fields[NAME]._exclusive.required property, but that seems pretty hardcore.

[maximilianoforlenza]

@jquense One question, how can I get the required fields using when? I’ve found this comment https://github.com/formium/formik/issues/1241#issuecomment-547452352. Using when schema.describe().fields[field].tests returns an empty array

[kusmierz]

@lookfirst, maybe add something like:

schema.isRequired('name'); // returns boolean

isFieldRequired(field) {
  return this.describe().fields[field].tests.findIndex(({ name }) => name === 'required') >= 0;
}