validate method

@override void validate()

Метод проверяет валидность данных

Implementation

@override
void validate() {
  for (int i = 0; i < items.length; i++) {
    items[i].validate();
  }

  final String? _email = email;
  final String? _phone = phone;
  if (_email != null || _phone != null) {
    assert((_email != null) ^ (_phone != null));

    if (_email != null) {
      final bool match =
          RegExp(r'^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$')
              .hasMatch(_email);
      assert(_email.length <= 100 && match);
    }
    if (_phone != null) {
      final bool match = RegExp(r'^\+[0-9](?:[\d]*)$').hasMatch(_phone);
      assert(_phone.length <= 19 && match);
    }
  }

  final String? _emailCompany = emailCompany;
  if (_emailCompany != null) {
    final bool match =
        RegExp(r'^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$')
            .hasMatch(_emailCompany);
    assert(_emailCompany.length <= 100 && match);
  }
}