[英]Send message using Django Channels from outside Consumer class
[英]How to send data to a websocket from outside of consumer django channels
我正在嘗試從消費者外部將數據發送到 websocket
所以我做了以下事情:
設置.py
CHANNEL_LAYERS = {
"default": {
"BACKEND": "channels_redis.core.RedisChannelLayer",
"CONFIG": {
"hosts": [("127.0.0.1", 6379)],
},
},
}
路由.py
from django.urls import path
from .consumers import CoinsListConsumer
websocket_urlpatterns = [
path('ws/coins/', CoinsListConsumer.as_asgi())
]
asgi.py
import os
from django.core.asgi import get_asgi_application
from channels.auth import AuthMiddlewareStack
from channels.routing import ProtocolTypeRouter, URLRouter
from channels.security.websocket import AllowedHostsOriginValidator
from apps.coins.routing import websocket_urlpatterns
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings.local')
application = ProtocolTypeRouter({
'http': get_asgi_application(),
'websocket': AllowedHostsOriginValidator(
AuthMiddlewareStack(
URLRouter(
websocket_urlpatterns,
)
)
)
})
消費者.py
class CoinsListConsumer(AsyncWebsocketConsumer):
async def connect(self):
logger.info('Websocket was connected.')
await self.accept()
async def disconnect(self, code):
logger.warning('Websocket was disconnected.')
pass
async def receive(self, text_data=None, bytes_data=None):
return await super().receive(text_data, bytes_data)
好吧,這沒關系,當我去看風景時...... websocket 將連接得很好
但是當我想將數據發送到 websocket 時。
def send_data_to_websocket_coins_list_view(data: List[Dict]) -> None:
"""Send data to websocket coins list view """
async_to_sync(channel_layer.send)(json.dumps(data))
這不起作用並引發以下錯誤TypeError: send() missing 1 required positional argument: 'message'
同樣在文檔中,這應該通過以下代碼工作
async_to_sync(channel_layer.send)("channel_name", json.dumps({...}))
它也不起作用並引發以下錯誤AssertionError: message is not a dict
那么問題是什么? 我應該怎么辦?
你不需要轉儲數據
async_to_sync(channel_layer.send)(data)
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