fromJson static method

Transaction? fromJson(dynamic value)

Returns a new Transaction instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static Transaction? fromJson(dynamic value) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      requiredKeys.forEach((key) {
        assert(json.containsKey(key),
            'Required key "Transaction[$key]" is missing from JSON.');
        assert(json[key] != null,
            'Required key "Transaction[$key]" has a null value in JSON.');
      });
      return true;
    }());

    return Transaction(
      id: mapValueOfType<String>(json, r'id')!,
      creditAmount: mapValueOfType<String>(json, r'credit_amount')!,
      currentDate: mapValueOfType<String>(json, r'current_date')!,
      filePath: mapValueOfType<String>(json, r'file_path'),
      createdAt: mapValueOfType<String>(json, r'created_at')!,
      rtr: mapValueOfType<TransactionRtr>(json, r'rtr'),
    );
  }
  return null;
}