Question

我正在尝试查看当前用户是否在collaborators m2m字段中，但一直收到错误消息：

Cannot query "John Doe": Must be "Company" instance.

有人可以帮我解决条件声明吗？

models.py：

class MyUser():
    name = ...
    email = ...

class Company(models.Model):
    user = models.ForeignKey(MyUser, null=True,
                             related_name='company_owner',
                             on_delete=models.SET_NULL)
    collaborators = models.ManyToManyField(MyUser, blank=True, 
                                           related_name='company_collaborators')
    name = models.CharField(max_length=120)

views.py：

def company_dash(request, username):
    user = request.user
    company = get_object_or_404(
        Company, Q(is_active=True), username=username)

    # NEED HELP HERE PLEASE
    if company.user == user or company.collaborators.filter(company_collaborators=user).exists():
        # do something

Answer 1

完整文档为here

您可以使用

if company.user == user or company.collaborators.filter(collaborators=user):

或

if company.user == user or company.collaborators.filter(id=user.id):

我认为没有必要添加.exists()，因为filter(collaborators=user)返回列表要评估为False，如果为空。

查看ManyToManyField中的用户

1 个答案: