validator_int static method

FormFieldValidator<String> validator_int({
  1. required String messageEmpty,
  2. required String messageNotInt,
})

Implementation

static FormFieldValidator<String> validator_int({
  required String messageEmpty,
  required String messageNotInt,
}) =>
    (value) {
      if (value == null || value.isEmpty) return messageEmpty;
      final v = int.tryParse(value);
      if (v == null) return messageNotInt;
      return null;
    };