How to save flutter TimeOfDay to firebase?

Question

I am working on a flutter application where I am showing a TimeRangepicker using this plugin: time_range_picker and I am getting TimeOfDay(09:00) + TimeOfDay(12:00) as a result by using this code:

  onPressed: () async {
                        TimeRange result = await showTimeRangePicker(
                            use24HourFormat: false,
                            interval: Duration(minutes: 30),
                            context: context,
                            start: TimeOfDay(hour: 9, minute: 0),
                            end: TimeOfDay(hour: 12, minute: 0),
                            disabledTime: TimeRange(
                                startTime: TimeOfDay(hour: 23, minute: 0),
                                endTime: TimeOfDay(hour: 5, minute: 0)),
                            disabledColor: Colors.red.withOpacity(0.5),
                            strokeWidth: 4,
                            ticks: 24,
                            ticksOffset: -7,
                            ticksLength: 15,
                            ticksColor: Colors.grey,
                            labels: [
                              "12 pm",
                              "3 am",
                              "6 am",
                              "9 am",
                              "12 am",
                              "3 pm",
                              "6 pm",
                              "9 pm"
                            ].asMap().entries.map((e) {
                              return ClockLabel.fromIndex(
                                  idx: e.key, length: 8, text: e.value);
                            }).toList(),
                            labelOffset: 35,
                            rotateLabels: false,
                            padding: 60);

                        print("${result.startTime} + ${result.endTime}");
                      },

But the only problem is I can find an appropriate way to save this to firebase, I don't need date all I need is TimeOfDay.

Answer 1

In the common use case whereby only the hour and minute are required a simple map of these values will suffice.

Map timeOfDayToFirebase(TimeOfDay timeOfDay){
    return {
        'hour':timeOfDay.hour,
        'minute':timeOfDay.minute
           }
}


TimeOfDay firebaseToTimeOfDay(Map data){
        return TimeOfDay(
            hour: data['hour'],
            minute: data['minute']);
}



var myTimeOfDayObject=TimeOfDay.now();
firebase.update({'time': timeOfDayToFirebase(myTimeOfDayObject)});

This way you don't have to worry about managing offsets, unintended locale changes and so forth.