Question

我的模型有manytomany字段，在我的AdminModel类的管理面板中，我使用此代码：

def get_object(self, request, object_id, to_field):
    # Hook obj for use in formfield_for_manytomany
    self.obj = super(GoalAdmin, self).get_object(request, object_id)
    return self.obj

def formfield_for_manytomany(self, db_field, request, **kwargs):
    if db_field.name == "reviewers":
        kwargs["queryset"] = Goal.objects.get(id=self.obj.id).reviewers.all()
    return super(GoalAdmin, self).formfield_for_manytomany(db_field, request, **kwargs)

一切正常，直到我尝试从管理面板添加目标。比我收到这个错误：

'GoalAdmin' object has no attribute 'obj'

我该如何解决？

UPD：错误发生在这里：

 kwargs["queryset"] = Goal.objects.get(id=self.obj.id).reviewers.all() 
Variable    Value
self       <goals.admin.GoalAdmin object at 0xa7d472cc>
db_field    <django.db.models.fields.related.ManyToManyField: reviewers>
request     <WSGIRequest: GET '/goals/goal/add/'>
kwargs      {}

Answer 1

您的错误可能正在发生，因为get_object未在formfield_for_manytomany运行时被调用。

可能有办法解决这个问题，但这确实是错误的做法。这种事情应该通过定义自定义表单并在管理类中使用它来完成。

class GoalAdminForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(GoalAdminForm, self).__init__(*args, **kwargs)
        if self.instance is not None:
            self.fields["reviewers"].queryset = Goal.objects.get(id=self.instance.id).reviewers.all()

class GoalAdmin(admin.ModelAdmin):
    form = GoalAdminForm

AdminModel对象没有属性＆＃39; obj＆＃39;

1 个答案: