Async support for PermissionRequiredMixin

[g-nie]

I am trying to make use of PermissionRequiredMixin in an async context. My end goal is to be able to simply do:

from asgiref.sync import sync_to_async


class MyView(PermissionRequiredMixin, View):
    permission_required = 'some_perm'
    raise_exception = True

    async def get_permission_object(self):
        return await MyModel.objects.aget(slug='awesome-slug')

    async def get(self, request, *args, **kwargs):
        return await sync_to_async(render_to_string)('some_template.html')

but I'm currently (always) getting PermissionDenied with a console warning:
coroutine 'MyView.get_permission_object' was never awaited

If this is something that others can find useful as well, please do let me know and I can look into creating a PR for this. Thanks!

[panatale1]

@g-nie I think you need to await get_permission_object in the get method

[g-nie]

Thanks for your feedback, I believe this would still not cover all possible cases here. Feel free to have a look on my PR, tests under AsyncPermissionRequiredMixinTests include all the cases that I could come up with.