toMap method
Implementation
Map<String, dynamic> toMap() => <String, dynamic>{
"id": id,
"userName": userName,
"bedTitle": bedTitle,
"dormTitle": dormTitle,
"startDate": startDate.toIso8601String(),
"endDate": endDate.toIso8601String(),
"rent": rent,
"createdAt": createdAt.toIso8601String(),
};