您不能从异步上下文调用它 - 使用线程或 sync_to_async。在 Django 频道中

Question

这是我的 django 通道代码。如何获取它给出错误的数据您不能从异步上下文调用它 - 使用线程或 sync_to_async。

WaitlistConsumer 类（AsyncWebsocketConsumer）：

async def connect(self):
    await self.accept()
    try:
        asyncio.ensure_future(self.send_data())
    except Exception as e:
        print(e)

async def disconnect(self, close_code):
    self.task.cancel()

async def send_data(self):
    while True:
        await asyncio.sleep(3)
        try:
            waitlist =await sync_to_async(Waitlist.objects.all)()
            print(waitlist)
        
            
            if waitlist.exists():
                    print("first name")
                    data={"first_name":waitlist[0].first_name}
            else:
                    data = {"first_name": "No one is waiting"}
            await self.send(json.dumps(data))
        except Exception as e:
            print(e)