id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
35083	Make django.utils.decorators.method_decorator work with async functions.	Drew Winstel	Vaarun Sinha	"I first discovered this while trying to enforce a CSRF cookie on a subclass of the [standard strawberry GraphQL view](https://strawberry.rocks/docs/integrations/django), but I was able to replicate this using exclusively plain Django code:

When trying to use a `@method_decorator` to enforce a CSRF cookie on a parent class's method, the `iscoroutinefunction` logic appears to incorrectly detect that the decorated view is indeed async (https://github.com/django/django/blob/74f7deec9e334a69bfbfdd068285618534198bd5/django/utils/decorators.py#L162-L192),  leading to an exception: `AttributeError: 'coroutine' object has no attribute 'set_cookie'`

Steps to replicate:
1. Create a simple project with the below views and URLs.
2. GET `/view1/` and observe that you see ""hi"" in the response
3. GET `/view2/` and observe the above attribute error

Expected behavior:
- Steps 2 and 3 return identical results

{{{
# views.py
from typing import Any

from django.http.request import HttpRequest
from django.http.response import HttpResponse
from django.views import View
from django.utils.decorators import method_decorator
from django.views.decorators.csrf import ensure_csrf_cookie


class View1(View):
    @method_decorator(ensure_csrf_cookie)
    async def dispatch(
        self, request: HttpRequest, *args: Any, **kwargs: Any
    ) -> HttpResponse:
        return await super().dispatch(request, *args, **kwargs)

    async def get(self, request: HttpRequest):
        return HttpResponse(""hi"")


@method_decorator(ensure_csrf_cookie, name=""dispatch"")
class View2(View1):
    pass
}}}

{{{
# urls.py
import views

# snip
urlpatterns += [
    path(""/view1/"", views.View1.as_view()),
    path(""/view2/"", view.View2.as_view()),
]
}}}

Thanks!"	New feature	closed	Utilities	dev	Normal	fixed	async	Carlton Gibson	Ready for checkin	1	0	0	0	0	0