The Django ORM is a synchronous piece of code, and so if you want to access it from asynchronous code you need to do special handling to make sure its connections are closed properly.
If you’re using
SyncConsumer, or anything based on it - like
JsonWebsocketConsumer - you don’t need to do anything special, as all your
code is already run in a synchronous mode and Channels will do the cleanup
for you as part of the
If you are writing asynchronous code, however, you will need to call
database methods in a safe, synchronous context, using
channels.db.database_sync_to_async is a version of
that also cleans up database connections on exit.
To use it, write your ORM queries in a separate function or method, and then
call it with
database_sync_to_async like so:
from channels.db import database_sync_to_async async def connect(self): self.username = await database_sync_to_async(self.get_name)() def get_name(self): return User.objects.all().name
You can also use it as a decorator:
from channels.db import database_sync_to_async async def connect(self): self.username = await self.get_name() @database_sync_to_async def get_name(self): return User.objects.all().name