Django DateTimeField 很天真，但 USE_TZ = True

Question

我在我的 Debian 服务器上遇到以下问题。注意：在本地 Mac 环境、相同的代码库上不会发生此问题。

if self.ends < timezone.now():Exception Type: TypeError at /dealvote/Exception Value: can't compare offset-naive and offset-aware

我做了以下事情：

USE_TZ = 在 settings.py 中为真 TIME_ZONE = settings.py 中的“UTC” 安装 pytz 已安装 mysql 时区表 mysql_tzinfo_to_sql —（如建议此处）

代码：

ends = models.DateTimeField(blank=True)

@property
def isEnded(self):
    if self.ends is not None:

        #Extra check to make sure self.ends is aware
        if timezone.is_naive(self.ends):
            self.ends.replace(tzinfo=timezone.utc)

        #self.ends is not aware here. timezone.now() is aware as checked in django shell
        if self.ends < timezone.now():
            return True
        else:
            return False

ends 设置如下：

def setEnd(self, mins, hrs, dys):
    self.ends = timezone.now()
    isFlashDeal = False

    try:
        minutes = int(mins)
        self.ends += timedelta(minutes=int(mins))
        isFlashDeal = True

    except Exception:
        pass

    try:
        self.ends += timedelta(hours=int(hrs))
        isFlashDeal = True
    except Exception:
        pass

    try:
        self.ends += timedelta(days=int(dys))
        isFlashDeal = True
    except Exception:
        pass

    if isFlashDeal == False:
        self.ends = None

    if timezone.is_naive(self.ends):
        self.ends.replace(tzinfo=timezone.utc)

Answer 1

改变这一行：

self.ends.replace(tzinfo=timezone.utc)

到

timezone.make_aware(self.ends, timezone.get_current_timezone())

解决了问题！