Authenticating Swagger API docs (drf-yasg) - django

Question

I've setup DRF-YASG but am unable to figure out how to configure it to show Views that require Authentication.
Below is the configuration.
schema_view = get_schema_view(
openapi.Info(
title="Swagger Doc",
default_version='v1',
description="Test description",
terms_of_service="https://www.google.com/policies/terms/",
contact=openapi.Contact(email="contact#snippets.local"),
license=openapi.License(name="BSD License"),
),
validators=['flex', 'ssv'],
permission_classes=(permissions.AllowAny,), # If I change the permission it throws an exception. See below
public=False,
patterns=public_apis,
)
the public_apis are the APIs that I want a person to see after they have authenticated themselves.
With the above configuration, it does not show a single API. It only shows the Authorize Button and text that says No operations defined in spec!. But if I change public=False to public=True then it shows all the APIs.
PS: Earlier I was using Django Rest Swagger and I had been able to configure it to show the APIs only after the JWT token had been provided.
Am is using JWT for authentication.
Exception on Permission Change:
Another issue is that if I change the permission above to a DRF Permission class the rendering fails with the error below:
Internal Server Error: /swagger/
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 217, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 215, in _get_response
response = response.render()
File "/usr/local/lib/python3.6/site-packages/django/template/response.py", line 107, in render
self.content = self.rendered_content
File "/usr/local/lib/python3.6/site-packages/rest_framework/response.py", line 72, in rendered_content
ret = renderer.render(self.data, accepted_media_type, context)
File "/usr/local/lib/python3.6/site-packages/drf_yasg/renderers.py", line 54, in render
self.set_context(renderer_context, swagger)
File "/usr/local/lib/python3.6/site-packages/drf_yasg/renderers.py", line 62, in set_context
renderer_context['title'] = swagger.info.title
AttributeError: 'dict' object has no attribute 'info'
Internal Server Error: /swagger/
I've tried changing it to permmissions.IsAuthenticated and my own custom permission classes but they all fail with the same error.

Answer 1

Turned out the issue was that I was missing rest_framework.authentication.SessionAuthentication in DRF's DEFAULT_AUTHENTICATION_CLASSES.
So the request object sent after logging in via the Django Admin login view did not have a user so all permission classes kept failing and it would then lead to the above error.
So after adding it drf-yasg shows all its glory.
Bug:
The error it throws when this occurs was raised as bug though. See #issue58.