python - 在django中查询时间戳字段

Question

在我看来，我有以下格式的日期 s_date=20090106 和 e_date=20100106

模型定义为

     class Activity(models.Model):
          timestamp = models.DateTimeField(auto_now_add=True)

如何查询包含上述信息的时间戳。

   Activity.objects.filter(timestamp>=s_date and timestamp<=e_date)

谢谢.....

Answer 1

您必须将日期转换为 datetime.datetime 类的实例。最简单的方法是:

import datetime

#
# This creates new instace of `datetime.datetime` from a string according to
# the pattern given as the second argument.
#
start = datetime.datetime.strptime(s_date, '%Y%m%d')
end = datetime.datetime.strptime(e_date, '%Y%m%d')

# And now the query you want. Mind that you cannot use 'and' keyword
# inside .filter() function. Fortunately .filter() automatically ANDs
# all criteria you provide.
Activity.objects.filter(timestamp__gte=start, timestamp__lte=end)

尽情享受吧!