Question

我想过滤serve_date模型中的Reserve字段。

运行此表单时，请返回：expected string or buffer

class Reserve(forms.ModelForm):

    food_name = forms.ModelChoiceField(queryset=Food.objects.all())

    def __init__(self, year=None, month=None, day=None, serve_date=None, *args, **kwargs):
        super(Reserve, self).__init__(*args, **kwargs)

        self.year = year
        self.month = month
        self.day = day
        self.serve_date = serve_date
        date_stamp =  time.strptime(year+month+day,"%Y%M%d")
        serve_date = datetime.date(*date_stamp[:3])
        self.fields['food_name'].queryset = Food.objects.filter(
            serve_date__year = year, serve_date__month = month, serve_date__day = day)


    class Meta:
        model = Reservation
        fields = ('food_count', 'food_name')

食物模型：

class Food(models.Model):

    class Meta:
        verbose_name = "Food"
        verbose_name_plural = "Foods"

    def __unicode__(self):
        return self.food_name

    food_name = models.CharField(verbose_name="Food Name", max_length=50)
    price = models.CharField(verbose_name="Food Price", max_length=50)
    serve_date = models.DateTimeField(verbose_name="Serve Date")

回溯

args    ()

day     None

kwargs  {u'auto_id': u'id_%s',
 u'empty_permitted': True,
 u'error_class': <class 'django.forms.utils.ErrorList'>,
 u'prefix': u'form-0',
 u'use_required_attribute': False}

month   None

self    <ReservationForm bound=False, valid=Unknown, fields=(food_name;food_count)>

serve_date  None

year    None

Answer 1

您可以使用form_kwargs：

django Doc：Passing custom parameters to formset forms

django - 如何将datetime参数传递给modelform

1 个答案: