can't get the profile object firstname - django

Question

I'm trying to get the profile firstname but it gives me this error
File "/home/marwan/Desktop/Gowd/venv/lib/python3.6/site-packages/django/utils/asyncio.py", line 24, in inner
raise SynchronousOnlyOperation(message)
django.core.exceptions.SynchronousOnlyOperation: You cannot call this from an async context - use a thread or sync_to_async.
WebSocket DISCONNECT /public_chat/1/ [127.0.0.1:53742]
INFO 2021-03-12 01:43:30,570 runserver 119412 140507688003328 WebSocket DISCONNECT /public_chat/1/ [127.0.0.1:53742]
I think that this error has something to do with trying to get the user profile in line 56
"profile": self.scope["user"].profile.firstname,
if I remove it will work fine
this is my consumers.py file
from channels.generic.websocket import AsyncJsonWebsocketConsumer
import json
from django.contrib.auth import get_user_model
from gowd_project.users.models import User, Profile
User = get_user_model()
# Example taken from:
# https://github.com/andrewgodwin/channels-examples/blob/master/multichat/chat/consumers.py
class PublicChatConsumer(AsyncJsonWebsocketConsumer):
async def connect(self):
"""
Called when the websocket is handshaking as part of initial connection.
"""
print("PublicChatConsumer: connect: " + str(self.scope["user"]))
# let everyone connect. But limit read/write to authenticated users
await self.accept()
# Add them to the group so they get room messages
await self.channel_layer.group_add(
"public_chatroom_1",
self.channel_name,
)
async def disconnect(self, code):
"""
Called when the WebSocket closes for any reason.
"""
# leave the room
print("PublicChatConsumer: disconnect")
pass
async def receive_json(self, content):
"""
Called when we get a text frame. Channels will JSON-decode the payload
for us and pass it as the first argument.
"""
# Messages will have a "command" key we can switch on
command = content.get("command", None)
print("PublicChatConsumer: receive_json: " + str(command))
print("PublicChatConsumer: receive_json: message: " + str(content["message"]))
if command == "send":
if len(content["message"].lstrip()) == 0:
raise Exception("You can't send an empty message.")
await self.send_message(content["message"])
async def send_message(self, message):
await self.channel_layer.group_send(
"public_chatroom_1",
{
"type": "chat.message",
"user_id": self.scope["user"].id,
"user_name": self.scope["user"].name,
"profile": self.scope["user"].profile.firstname,
"message": message,
}
)
async def chat_message(self, event):
"""
Called when someone has messaged our chat.
"""
# Send a message down to the client
print("PublicChatConsumer: chat_message from user #" + str(event["user_id"]))
await self.send_json(
{
"user_id": event["user_id"],
"user_name": event["user_name"],
"message": event["message"],
},
)

Answer 1

sync_to_async takes a callable, not the result. so, I need to do this:
#sync_to_async
def get_user_profile(self, user):
return user.profile
async def send_message(self, message):
profile = await PublicChatConsumer.get_user_profile(self.scope["user"])
profile_name = profile.firstname
await self.channel_layer.group_send(
"public_chatroom_1",
{
"type": "chat.message",
"user_id": self.scope["user"].id,
"username": profile_name,
"message": message,
}
)
full documentation
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