fromJson static method

Attendee? fromJson(dynamic value)

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

Implementation

// ignore: prefer_constructors_over_static_methods
static Attendee? 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(() {
      assert(json.containsKey(r'email'), 'Required key "Attendee[email]" is missing from JSON.');
      assert(json[r'email'] != null, 'Required key "Attendee[email]" has a null value in JSON.');
      assert(json.containsKey(r'status'), 'Required key "Attendee[status]" is missing from JSON.');
      assert(json[r'status'] != null, 'Required key "Attendee[status]" has a null value in JSON.');
      assert(json.containsKey(r'role'), 'Required key "Attendee[role]" is missing from JSON.');
      assert(json[r'role'] != null, 'Required key "Attendee[role]" has a null value in JSON.');
      assert(json.containsKey(r'optional'), 'Required key "Attendee[optional]" is missing from JSON.');
      assert(json[r'optional'] != null, 'Required key "Attendee[optional]" has a null value in JSON.');
      return true;
    }());

    return Attendee(
      email: mapValueOfType<String>(json, r'email')!,
      name: mapValueOfType<String>(json, r'name'),
      status: AttendeeStatus.fromJson(json[r'status'])!,
      role: AttendeeRole.fromJson(json[r'role'])!,
      optional: mapValueOfType<bool>(json, r'optional')!,
      comment: mapValueOfType<String>(json, r'comment'),
      additionalGuests: mapValueOfType<int>(json, r'additional_guests'),
    );
  }
  return null;
}