python - Django 经理返回今天的所有条目 - DateTimeField

Question

我将如何创建一个经理，它将返回模型中具有今天日期的所有条目，模型字段是日期时间字段，而不是日期字段？

timestamp = models.DateTimeField(auto_now=True)

class ValidEntryManager(models.Manager):
    def get_query_set(self):
        return super(ValidEntryManager, self).get_query_set().filter(timestamp__gte=datetime.today(), timestamp__lte=datetime.today())

allowed_entries = ValidEntryManager()

这是我尝试过的，但它返回 0 个对象，应该有。

打印 Entries.allowed_entries.all() >>>> []

Answer 1

您可以尝试将两个日期都设置为午夜：

class ValidEntryManager(models.Manager):
    def get_query_set(self):
        today = datetime.today()
        start_date = datetime(today.year, today.month, today.day)
        end_date = datetime(today.year, today.month, today.day+1)
        return super(ValidEntryManager, self).get_query_set().filter(timestamp__gte=start_date, timestamp__lte=end_date)

Answer 2

尝试这个

from datetime import datetime, timedelta

class ValidEntryManager(models.Manager):
    def get_query_set(self):
        return super(ValidEntryManager, self).get_query_set().filter(timestamp__range=(datetime.now(), datetime.now()- timedelta(days=1))

Answer 3

如此简单的任务不需要经理。

from datetime import date

...

@staticmethod
def get_for_today():
    today = date.today()
    return Entry.objects.filter(date_time__day=today.day,
                                date_time__month=today.month,
                                date_time__year=today.year,)

然后只是：

>>> Entry.get_for_today()