idCard static method

String? Function(String?) idCard({
  1. String? message,
})

Validates identification number (general)

Implementation

static String? Function(String?) idCard({String? message}) {
  return (String? value) {
    if (value == null || value.trim().isEmpty) {
      return null;
    }

    final cleaned = value.replaceAll(RegExp(r'[\s-]'), '');

    // Validate only numbers
    if (!RegExp(r'^[0-9]+$').hasMatch(cleaned)) {
      return message ?? _defaultMessages['idCard'];
    }

    return null;
  };
}