Django表单-日期时间字段仅显示日期

我有以下型号：

class Sponsorship(models.Model):
    sponsor = models.ForeignKey(Sponsor, related_name='sponsorships')
    start_datetime = models.DateTimeField(null=True, blank=True)
    end_datetime = models.DateTimeField(null=True, blank=True)

模型的形式如下所示：

class SponsorshipForm(ModelForm):

    class Meta:
        model = Sponsorship
        fields = ('start_datetime', 'end_datetime')
        widgets = {
            'start_datetime': forms.DateTimeInput(attrs={'class':
                                                             'form-control'}),
            'end_datetime': forms.DateTimeInput(attrs={'class':
                                                           'form-control'}),
        }



SponsorShipsFormSet = inlineformset_factory(Sponsor, Sponsorship,
                                                form=SponsorshipForm, extra=2)

从某种角度看，我通常会：

SponsorShipsFormSet(instance=self.object)

但在呈现表单时，datetime输入字段只有date for值，没有时间

为什么表单没有用日期和时间实例化

编辑

我在模板中打印了输入字段的值：

{{ form.start_datetime.value }}

---

而且它确实应该具有datetime值。

好的，这是一个百万分之一的洞察

所有这些麻烦的原因都来自设置

DATETIME\u输入\u格式

我以前的经历：

DATETIME_INPUT_FORMATS = (
    '%d %B %Y',                # '05 March 2014'
    '%d %B %Y - %H:%M',        # '05 March 2014 - 08:07'
    '%d %B %Y - %H:%M:%S',     # '05 March 2014 - 08:07:59'
    '%d %B %Y - %H:%M:%S.%f',  # '05 March 2014 - 08:07:59.0001'

    '%d/%m/%Y %H:%M:%S.%f',    # '25/10/05 14:30:59.000200'
    '%d/%m/%Y %H:%M:%S',       # '25/10/05 14:30:59'
    '%d/%m/%Y %H:%M',          # '25/10/05 14:30'
    '%d/%m/%Y',                # '25/10/05'

    '%d-%m-%Y %H:%M:%S.%f',    # '25-10-05 14:30:59.000200'
    '%d-%m-%Y %H:%M:%S',       # '25-10-05 14:30:59'
    '%d-%m-%Y %H:%M',          # '25-10-05 14:30'
    '%d-%m-%Y',                # '25-10-05'

    '%Y-%m-%d %H:%M:%S.%f',    # '2006-10-25 14:30:59.000200'
    '%Y-%m-%d %H:%M:%S',       # '2006-10-25 14:30:59'
    '%Y-%m-%d %H:%M',          # '2006-10-25 14:30'
    '%Y-%m-%d',                # '2006-10-25'

    '%m/%d/%Y %H:%M:%S.%f',    # '10/25/2006 14:30:59.000200'
    '%m/%d/%Y %H:%M:%S',       # '10/25/2006 14:30:59'
    '%m/%d/%Y %H:%M',          # '10/25/2006 14:30'
    '%m/%d/%Y',                # '10/25/2006'

    '%m/%d/%y %H:%M:%S.%f',    # '10/25/06 14:30:59.000200'
    '%m/%d/%y %H:%M:%S',       # '10/25/06 14:30:59'
    '%m/%d/%y %H:%M',          # '10/25/06 14:30'
    '%m/%d/%y',                # '10/25/06'
)

是什么解决了我的问题：

DATETIME_INPUT_FORMATS = (
    '%d %B %Y - %H:%M:%S.%f',  # '05 March 2014 - 08:07:59.0001'
    '%d %B %Y - %H:%M:%S',     # '05 March 2014 - 08:07:59'
    '%d %B %Y - %H:%M',        # '05 March 2014 - 08:07'
    '%d %B %Y',                # '05 March 2014' <- this line was first before

    '%d/%m/%Y %H:%M:%S.%f',    # '25/10/05 14:30:59.000200'
    '%d/%m/%Y %H:%M:%S',       # '25/10/05 14:30:59'
    '%d/%m/%Y %H:%M',          # '25/10/05 14:30'
    '%d/%m/%Y',                # '25/10/05'

    '%d-%m-%Y %H:%M:%S.%f',    # '25-10-05 14:30:59.000200'
    '%d-%m-%Y %H:%M:%S',       # '25-10-05 14:30:59'
    '%d-%m-%Y %H:%M',          # '25-10-05 14:30'
    '%d-%m-%Y',                # '25-10-05'

    '%Y-%m-%d %H:%M:%S.%f',    # '2006-10-25 14:30:59.000200'
    '%Y-%m-%d %H:%M:%S',       # '2006-10-25 14:30:59'
    '%Y-%m-%d %H:%M',          # '2006-10-25 14:30'
    '%Y-%m-%d',                # '2006-10-25'

    '%m/%d/%Y %H:%M:%S.%f',    # '10/25/2006 14:30:59.000200'
    '%m/%d/%Y %H:%M:%S',       # '10/25/2006 14:30:59'
    '%m/%d/%Y %H:%M',          # '10/25/2006 14:30'
    '%m/%d/%Y',                # '10/25/2006'

    '%m/%d/%y %H:%M:%S.%f',    # '10/25/06 14:30:59.000200'
    '%m/%d/%y %H:%M:%S',       # '10/25/06 14:30:59'
    '%m/%d/%y %H:%M',          # '10/25/06 14:30'
    '%m/%d/%y',                # '10/25/06'
)

DATETIME\u输入\u格式=(
“%d%B%Y-%H:%M:%S.%f'，#“2014年3月5日-08:07:59.0001”
“%d%B%Y-%H:%M:%S”，#“2014年3月5日-08:07:59”
“%d%B%Y-%H:%M”，#“2014年3月5日-08:07”
“%d%B%Y”，#“2014年3月5日”