Question

（Django 1.10，Python 2.7）

我有一年的模特：

class Year(models.Model):
    start_date = models.DateTimeField()
    end_date = models.DateTimeField()
    election_nomination_start_datetime = models.DateTimeField()
    election_nomination_end_datetime = models.DateTimeField()

我想制作一个中间件 - 我以前从未做过 - 检查datetime.today或datetime.now是否在election_nomination_start_datetime和election_nomination_end_datetime之间的日期范围内任何年度对象;因此，某些页面的可访问性会有所不同。

我不知道如何执行此操作，因此非常感谢任何帮助。另外，如果可以按照我上面描述的方式（限制对URL的访问等）给出使用中间件的示例，那对我来说非常有用。

谢谢。

Answer 1

class Year(models.Model):
    start_date = models.DateTimeField()
    end_date = models.DateTimeField()
    election_nomination_start_datetime = models.DateTimeField()
    election_nomination_end_datetime = models.DateTimeField()
    objects = YearQuerySet().as_manager()


class YearQuerySet(models.QuerySet):

    def occurring_in_day(self, year, month, day):
        try:
            picked_date = datetime.date(year, month, day)
        except (TypeError, ValueError):
            return self.none()

        return self.filter(
            election_nomination_start_datetime__lte=picked_date,
            election_nomination_end_datetime__gte=picked_date,
        )

    def occurring_now(self):
        now = datetime.now()
        return self.filter(
            election_nomination_start_datetime__lte=now,
            election_nomination_end_datetime__gte=now,
        )

然后你可以做类似

的事情

Year.objects.occurring_now()现在正在发生实例

并且今天要发生实例，请执行

today = datetime.today()
day = today.day
month = today.month
year = today.year
Year.objects. occurring_in_day(year, month, day)

Django：检查Datetime对象范围内是否为今天

1 个答案: