Trying to override "required" tag validation but doesn't work

[andriantonee]

I'm trying to override required tag from baked_in.go using RegisterValidation but it give error because it is listed as restrictedTags in baked_in.go , is there any explanation why required tag is listed as restrictedTags?

[andriantonee]

after i check baked_in.go, i finally understand why required tag is listed as restrictedTags.

func hasValue(fl FieldLevel) bool {
	field := fl.Field()
	switch field.Kind() {
	case reflect.Slice, reflect.Map, reflect.Ptr, reflect.Interface, reflect.Chan, reflect.Func:
		return !field.IsNil()
	default:
		if fl.(*validate).fldIsPointer && field.Interface() != nil {
			return true
		}
		return field.IsValid() && field.Interface() != reflect.Zero(field.Type()).Interface()
	}
}

it use private struct fl.(*validate).fldIsPointer to validate.