基于id的中继限制查询访问的django石墨烯

我试图将单个对象查询限制为创建它们的用户。

模型.py

class Env(models.Model):
    name = models.CharField(max_length=50)
    user = models.ForeignKey(
        User, on_delete=models.CASCADE)
    description = TextField()

模式.py

class EnvNode(DjangoObjectType):
    class Meta:
        model = Env
        filter_fields =  {
            'name': ['iexact'],
            'description': ['exact', 'icontains'],
            }
        interfaces = (relay.Node, )


Query(object):
    env = relay.Node.Field(EnvNode)
    all_envs = DjangoFilterConnectionField(EnvNode)

我试图添加一个解析查询,但是 only worked for the "all_env" query 使用筛选器,但不适用于单个对象查询

def resolve_env(self, info):
    env = Env.objects.filter(user = info.context.user.id)
    if env is not None:
        return env
    else:
        return None

还尝试按照建议将类方法添加到envnode here under filtering Node based ID access 以下内容:

@classmethod
def get_node(context, cls, id, info):
    try:
        env =  cls._meta.model.objects.get(id = id)
    except cls._meta.model.DoesNotExist:
        return None

    if context.user == env.user:
        return env
    return None

但我犯了个错误:

"message": "get_node() missing 1 required positional argument: 'info'",