Question

我尝试计算2个DateTimeField之间的差异，以了解每周的总工作量（仅小时），而我只希望几天使用相同的功能。

在另一个Stackoverflow问题之后，我发现这样的聚合：

total_hours_per_week = (Timesheet.objects.filter(
        owner = request.user.pk,
        week = datetime.datetime.now().isocalendar()[1]
    )
    .annotate(
        total_hours_per_week=Func(F('end'), F('start'), operator='+', function='age')
    ))

当前，我已经好几天没有该功能了（如果您也可以帮助她），但是以前的汇总返回了此错误： “没有这样的功能：年龄”

您可以在下面阅读我的模型：

class Timesheet(models.Model):
owner = models.ForeignKey(User, on_delete = models.CASCADE)
title = models.CharField(max_length = 64, verbose_name = _("Title"))
start = models.DateTimeField(verbose_name = _("Start time"))
end = models.DateTimeField(verbose_name = _("End time"))
allDay = models.BooleanField(blank = True, default = False, verbose_name = _("All day"), help_text = _("If it's a full day work, just click 'Now' for start/end"))
week = models.IntegerField(verbose_name = "working week")

def __str__(self):
    return "{}".format(self.title)

def save(self, *args, **kwargs):
    if not self.pk:
        self.week = datetime.datetime.now().isocalendar()[1]
    if self.allDay:
        self.start = datetime.datetime(year = datetime.datetime.today().year, month = datetime.datetime.today().month, day = datetime.datetime.today().day, hour=8, minute=00)
        self.end = datetime.datetime(year = datetime.datetime.today().year, month = datetime.datetime.today().month, day = datetime.datetime.today().day, hour=17, minute=30)
    super(Timesheet, self).save(*args, **kwargs)

希望您能帮助我解决我的错误。

谢谢你！

汇总django中的2个字段以计算小时之间的差异

0 个答案: