如何只允许登录的用户连接到Django频道的websocket？

pip install channels

INSTALLED_APPS = [
    ...
    'channels',
    'channels_redis',
    ...
]

CHANNEL_LAYERS = {
    'default': {
        'BACKEND': 'channels_redis.core.RedisChannelLayer',
        'CONFIG': {
            'hosts': [('localhost', 6379)],
        },
    },
}

from channels.generic.websocket import AsyncWebsocketConsumer

class MyConsumer(AsyncWebsocketConsumer):
    async def connect(self):
        if self.scope["user"].is_anonymous:
            # 如果用户未登录，则关闭连接
            await self.close()
        else:
            # 如果用户已登录，则接受连接
            await self.accept()

    async def disconnect(self, close_code):
        # 断开连接时的处理
        pass

    async def receive(self, text_data):
        # 接收到消息时的处理
        pass

from django.urls import re_path
from . import consumers

websocket_urlpatterns = [
    re_path(r'ws/my_channel/$', consumers.MyConsumer.as_asgi()),
]

from django.urls import include, re_path

urlpatterns = [
    ...
    re_path(r'^', include('myapp.urls')),
    re_path(r'^', include('myotherapp.urls')),
    re_path(r'^', include('mythirdapp.urls')),
    re_path(r'^ws/', include('myproject.routing.websocket_urlpatterns')),
]