需要Django formsets

Question

如何制作django formset中的所有表单？我试图在cleaned_data覆盖formset的clean()方法中验证所有字段的存在,但它只是静默失败而没有显示任何错误.

谢谢!

源代码:

class BaseScheduleForm(forms.ModelForm):

    def __init__(self, *args, **kwargs):
        super(BaseScheduleForm, self).__init__(*args, **kwargs)
        self.fields['day'].widget = forms.HiddenInput()
        self.fields['user'].widget = forms.HiddenInput()

    class Meta:
        model = Schedule

    def clean_end_time(self):
        start_time = self.cleaned_data.get('start_time')
        end_time = self.cleaned_data['end_time']

        if start_time and end_time:
            if end_time <= start_time:
                raise forms.ValidationError("End time must be later that start time.")
        return end_time

class BaseScheduleFormset(forms.models.BaseModelFormSet):

    def __init__(self, *args, **kwargs):
        super(BaseScheduleFormset, self).__init__(*args, **kwargs)
        for number, weekday in enumerate(WEEKDAYS):
            self.forms[number].day_name = weekday[1]

    def clean(self):
        raise forms.ValidationError('You must specify schedule for the whole week')

ScheduleFormset = forms.models.modelformset_factory(Schedule, extra=7, max_num=7,
    form=BaseScheduleForm, formset=BaseScheduleFormset)

一天有7个表格,所有表格必须填写有效.在上面的示例中,我只是尝试在清理中引发错误.is_valid()变为False,但未显示任何错误.