drf-spectacular is using the wrong AutoSchema to generate Swagger

Question

Previously I was using drf-yasg but want to update to use OpenAPI 3. I am trying to switch over to drf-spectacular. Following the instruction, I ran pip install drf-spectacular, I've removed all references to the drf-yasg package, and updated Settings.py as follows:

INSTALLED_APPS = [ 
    ...
    "drf_spectacular",
]


REST_FRAMEWORK = {
    "DEFAULT_SCHEMA_CLASS": "drf_spectacular.openapi.AutoSchema",
}

When I use the CLI to generate the schema, I get the bellow AssertionError. If anyone has run into this problem before and has any insight, it would be much appreciated!

I'm using Python 3.7, Django 3.0, Django Rest Framework 3.11, and DRF Spectacular 0.10.0.

Traceback (most recent call last):
  File "manage.py", line 23, in <module>
    main()
  File "manage.py", line 19, in main
    execute_from_command_line(sys.argv)
  File "/opt/anaconda3/envs/dev/lib/python3.7/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "/opt/anaconda3/envs/dev/lib/python3.7/site-packages/django/core/management/__init__.py", line 395, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/opt/anaconda3/envs/dev/lib/python3.7/site-packages/django/core/management/base.py", line 328, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/opt/anaconda3/envs/dev/lib/python3.7/site-packages/django/core/management/base.py", line 369, in execute
    output = self.handle(*args, **options)
  File "/opt/anaconda3/envs/dev/lib/python3.7/site-packages/drf_spectacular/management/commands/spectacular.py", line 50, in handle
    schema = generator.get_schema(request=None, public=True)
  File "/opt/anaconda3/envs/dev/lib/python3.7/site-packages/drf_spectacular/generators.py", line 187, in get_schema
    paths=self.parse(request, public),
  File "/opt/anaconda3/envs/dev/lib/python3.7/site-packages/drf_spectacular/generators.py", line 160, in parse
    'Incompatible AutoSchema used on View. Is DRF\'s DEFAULT_SCHEMA_CLASS '
AssertionError: Incompatible AutoSchema used on View. Is DRF's DEFAULT_SCHEMA_CLASS pointing to "drf_spectacular.openapi.AutoSchema" or any other drf-spectacular compatible AutoSchema?

Answer 1

Please update the Django Rest Framework 3.11 to 3.12 it will work.