def calulate_time_and_week(self):
year, week, day = self.date.isocalendar()
self.week = week
if self.start_time is not None and self.end_time is not None:
self.working_time = get_working_time(self.start_time, self.end_time, self.break_minutes)
else:
self.working_time = 0.0
def validate_break_minutes(form, field):
if form.end_time.data is not None:
if get_working_time(form.start_time.data, form.end_time.data, field.data) <= 0:
raise ValidationError('Working time may not be less then break time.')
