Question 171637 in Flutter Question posted in
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“How can I use a custom fn to get an array of timestamps btwn two diff times w/ FlutterFlow?”

So im trying to get an array of timestamps from 2 times in flutterflow.
ex. time1 06:00, time2 06:05
the result would be 06:00, 06:01, 06:02, 06:03, 06:04, 06:05.

Im using a custom function so somebody please help

DateTime occupiedTime(DateTime from, DateTime to,)  {
  /// MODIFY CODE ONLY BELOW THIS LINE

 from = DateTime(from.hour, from.minute,);
  to = DateTime(to.hour, to.minute);
  return 
  /// MODIFY CODE ONLY ABOVE THIS LINE
}

i tried this code but no matter what i try to return it gives me error

Tags:

2

Answers


  1. 0

    Based on your input & output, you are trying to get List time (interval based on minute).

    It can be

      List<DateTime> occupiedTime(DateTime from, DateTime to) {
    final differenceInMinutes = to.difference(from).inMinutes;
    return List.generate(differenceInMinutes, (index) {
      return from.add(Duration(minutes: index));
    });
  }

    While you like to format, you can use packages/intl or

      String getTimeString(DateTime dateTime) {
    return '${dateTime.hour}:${dateTime.minute}';
  }

    Test snippet

      final result = occupiedTime(DateTime.now(), DateTime.now().add(Duration(minutes: 5)));
  final stringTime = result.map((e) => getTimeString(e)).toList();
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  2. 0

    You can define a method like this:

    List<DateTime> occupiedTime(
  DateTime from,
  DateTime to, [
  Duration duration = const Duration(minutes: 1),
]) {
  List<DateTime> timestamps = [];

  while (from.isBefore(to) || from.isAtSameMomentAs(to)) {
    timestamps.add(from);
    from = from.add(duration);
  }

  return timestamps;
}

    Usage:

    void main() {
  DateTime time1 = DateTime(2023, 1, 1, 6, 0);
  DateTime time2 = DateTime(2023, 1, 1, 6, 5);

  List<DateTime> result = occupiedTime(time1, time2);

  for (DateTime timestamp in result) {
    print(timestamp.toString());
  }
}

    Output:

    2023-01-01 06:00:00.000
2023-01-01 06:01:00.000
2023-01-01 06:02:00.000
2023-01-01 06:03:00.000
2023-01-01 06:04:00.000
2023-01-01 06:05:00.000
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