validation should change on some field

[ZaynJarvis]

1. React does not allow input with null values. Hence presence in react doesn't actually work.
   a walk around will be presence: { allowEmpty: false }
2. url tag with present: false doesn't work, a walk around will be

validators.urlAllowBlank = (value: any, ...others: any[]) => {
    if (isEmpty(value)) {
        return;
    }
    return validators.url(value, ...others);
}
xxx: {
  urlAllowBlank: true,
}

3. [ discussion ] xxxExist validation cause huge overhead

• Formik or any other form construction library may not be able to select name from the UI but use id to transmit info at the back.
• select options are fetched from library initially, validate the field for another time may be an overhead. And there's more boilerplate code for name -> id transformation either in frontend or backend.

[clarencecastillo]

Those are good points! Another way is to move the ID validation on the api side. Still redundant, but it is still good practice because we should not assume the client is always following the rules.

Can we selectively ignore the constraints instead? Ignore those with select ID.