Django sync decorator for async views

async_decorator.py

from functools import wraps
from inspect import iscoroutine
from asgiref.sync import sync_to_async

def async_decorator(sync_decorator):
    def _decorator(view_func):
        @wraps(view_func)
        async def _wrapper(*args, **kwargs):
            result = await sync_to_async(sync_decorator(view_func))(*args, **kwargs)
            if iscoroutine(result):
                return await result
            return result

        return _wrapper

    return _decorator


# Use like this
@async_decorator(login_required)
async def myview(request):
    ...