Question

我有3个模型，其中2个属于ManyToManyField

class Vkgroupstomonitor(models.Model):
    vk_groups = (('https://vk.com/southitpark','https://vk.com/southitpark'), ('https://vk.com/graphgrail', 'https://vk.com/graphgrail'))
    vk_group_name= models.CharField(max_length=255, default='0')#, choices=vk_groups, default='0')

    def __str__(self):
        return self.vk_group_name    

class Sourcetomonitor(models.Model):
    source_names = (('Вконтакте', 'Вконтакте'), ('Facebook', 'Facebook'), ('Twitter (скоро)', 'Twitter (скоро)'))
    source_name = models.CharField(max_length=255, choices=source_names, default='0')

    def __str__(self):
        return self.source_name  

class Userproject(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL, related_name="project", verbose_name=_("Владелец проекта"))

    vk_groups = models.ManyToManyField(Vkgroupstomonitor, null=True, blank=True, related_name="vkgroups", verbose_name=_("Группы Вконтакте"))
    source_name = models.ManyToManyField(Sourcetomonitor, null=True, blank=True, related_name="sourcename", verbose_name=_("Название источника"))

    name = models.CharField(u'Название проекта', unique=True, max_length=255)

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse('userproject_edit', kwargs={'pk': self.pk})

在forms.py中我有modelform：

class UserprojectForm(forms.ModelForm):
    class Meta:
        model = Userproject
        fields = ['name', 'user', 'description', 'vk_groups', 'source_name', 'date_updated', 'date_until'] #'date_created',  cannot add django.core.exceptions.FieldError: Unknown field(s) (date_created) specified for Userproject

    def __init__(self, *args, **kwargs):
        super(UserprojectForm, self).__init__(*args, **kwargs)
        self.fields['vk_groups'].queryset = Userproject.objects.filter(vk_groups=self.instance.vk_groups)

那么如何改变这一行 self.fields [＆＃39; vk_groups＆＃39;]。queryset = Userproject.objects.filter（vk_groups = self.instance.vk_groups）在多选字段中获取Vkgroupstomonitor实例仅限于当前的Userproject ？

尝试了Userproject.objects.filter（vk_groups = self.instance.vk_vk_group_name）和Userproject.objects.filter（vk_group_name = self.instance.vk_groups）但另一个错误：＆＃34;无法解析关键字＆＃39; vk_group_name＆＃ 39;进入田野。选项包括：date_created，date_until，date_updated，description，id，name，source_name，user，user_id，vk_groups＆＃34;

现在它显示了所有选项，我想在创建和更新视图中使用admin和frontend。

Django：“limit_choices_to”不适用于ManyToManyField

0 个答案: