format method
Return ISO8601 String of format YYYY-MM-DDThh:mm:ss.sss+hh:mm:ss
Implementation
String format() {
var buffer = StringBuffer();
// DateTime with millisecond/microsecond leads to variable length ISO String
DateTime simpleDateTime = DateTime(_dateTime.year, _dateTime.month,
_dateTime.day, _dateTime.hour, _dateTime.minute, _dateTime.second);
String isoString = simpleDateTime.toIso8601String();
buffer.write(isoString.substring(0, isoString.length - 4));
int totalMicroseconds = _nanoseconds + Temporal.getNanoseconds(_dateTime);
// ensure DateTime strings stored in SQLite to be in the same format
// and string based DataTime comparison to be accurate
buffer.write('.${totalMicroseconds.toString().padLeft(9, '0')}');
if (_offset != null) {
if (_offset!.inSeconds == 0) {
buffer.write('Z');
} else {
buffer.write(Temporal.durationToOffset(_offset!));
}
}
return buffer.toString();
}