Django CreateView ModelForm 下拉字段查询集过滤器

Question

这是我第一次真正使用 Django (1.6)，我一直无法弄清楚:

我试图将 CreateView 上的下拉列表限制为仅显示在项目模型中具有事件状态 (2) 的项目:

class ProjectStatus(models.Model):
    name = models.CharField(max_length=8)

class Project(models.Model):
    name = models.CharField(max_length=30)
    status = models.ForeignKey(ProjectStatus)

class WorkLog(models.Model):
    project = models.ForeignKey(Project)
    author = models.ForeignKey(User)
    log_date = models.DateField( default=datetime.date.today)
    accomplishments = models.TextField()

我的forms.py:

class WorklogCreateForm(ModelForm):

class Meta:
    model = WorkLog
    fields = [ 'project', 'log_date', 'accomplishments' ]

def __init__(self, *args, **kwargs):
    super(WorklogCreateForm, self).__init__(self, *args, **kwargs)
    self.fields['project'].queryset = Project.objects.filter(Project.status == 2)

和我的来自 views.py 的 CreateView:

class WorklogCreate(CreateView):
    form_class = WorklogCreateForm
    success_url = reverse_lazy('dashboard')

但我得到了 错误:

TypeError at /log/add/
'bool' object has no attribute '__getitem__'

如果我将过滤器更改为 (Project.status.id == 2)我反而得到:

AttributeError at /log/add/
'ReverseSingleRelatedObjectDescriptor' object has no attribute 'id'

我想我很接近，但显然没有完全掌握我需要的东西。有任何想法吗？谢谢。

Answer 1

尝试像这样过滤。

 self.fields['project'].queryset = Project.objects.filter(status_id=2)