我想知道如何从DateTimeField中提取年,月,日,小时和分钟?
我要提取信息的datimefield名为'redemption_date',模型的代码是:
from django.db import models
from datetime import datetime, timedelta
class Code(models.Model):
id = models.AutoField(primary_key=True)
code_key = models.CharField(max_length=20,unique=True)
redemption_date = models.DateTimeField(null=True, blank=True)
user = models.ForeignKey(User, blank=True, null=True)
# ...
def is_expired(self):
expired_date = datetime.now() - timedelta( days=2 )
my_redemtion_date = self.redemption_date
if self.redemption_date is None:
return False
if my_redemtion_date < expired_date:
return True
else:
return False
提前致谢!
答案 0 :(得分:7)
From the datetime documentation:
[...]
class datetime.datetime
A combination of a date and a time. Attributes: year, month, day, hour,
minute, second, microsecond, and tzinfo.
[...]
因此,您可以直接访问redemption_date
的属性来提取您想要的信息。
答案 1 :(得分:4)
不要忘记你的第一个信息来源应该是python本身。您可以在导入datetime后输入shell:
dir(datetime)
# even more detail on
help(datetime)
答案 2 :(得分:3)
redemption_date.year
redemption_date.month
etc...