Validation of 2 fields against each other

[herman-the-worm]

@felangel

This is related to issue #5

I am curious to how it would work out if there are 2 inputs that have to be validated against each other.

This method won't work anymore since 2 objects cannot co-create each other.

@felangel what would be a direction in this case?

The example of would be 2 time entries that need to be verified against each other.

Like start time and end time.

If I add the code example from above the the end_time field then it is only verified against start_time. But start_time is not verified against the initial field and I am struggling to find an elegant solution to solve this.

[ycherniavskyi]

Hm, what about treating these 2 fields as one complex field (as it seems it is in such case).

class ComplexObject {
  // ...
  final SomeObject one;
  final SomeObject two;
  // ...
}

class ComplexObjectFormzInput extends FormzInput<ComplexObject, FieldValidationError> {
  const ComplexObjectFormzInput() : super.pure(ComplexObject());
  const ComplexObjectFormzInput([ComplexObject value = ComplexObject()]) : super.dirty(value);

  @override
  FieldValidationError validator(ComplexObject value) {
    // ...
  }
}

[herman-the-worm]

@ycherniavskyi Thank you for the advice. I will try to implement and provide feedback here in the comment.

Thanks for your input

[felangel]

Closing for now but feel free to comment with additional questions and I'm happy to continue the conversation 👍