Add detection for unimported modules/packages used as a base for classes

[erinxocon]

This may have further implications and may actually be a bug but I will describe here.

from django.shortcuts import render

@method_decorator(staff_member_required, name='dispatch')
class IndexView(TemplateView):

    def get(self, request):
        pass

The above file will cause django to fail when it parses since it can't find TemplateView. Where the bug may be is that the language server does not flag this as a missing import. I honestly can't say if Jedi does as I haven't used it on any project for months. Anyways since this is not flagged by the engine you can not use the auto import feature! I can get around this by doing the following:

Then:

Then I can remove the t = TemplateView and everything is good. So this may be a bug, since maybe the engine should detect unimported references when used as a base class definition?? But maybe that's intended; if so it'd be great it we could use the import function in that way!

Cheers!

[jakebailey]

Seems like the undefined variable walker isn't walking down into the bases, maybe.

[erinxocon]

@jakebailey Let me know any other tests to run, happy to help however I can!

[erinxocon]

@jakebailey I found another instance of this happening:

I was decorating a class to register it with the django admin interface and experienced similar things where the model wasn't being flagged inside the decorator, but is if I just define it as a normal variable!