ImportError: Could not import 'rest_framework_json_api.django_filters.DjangoFilterBackend' for API setting 'DEFAULT_FILTER_BACKENDS'

[JonForest]

I've just started a new project with a Python 3.7.2 virtual env.

Results of a freeze are:
➜ mysite pip freeze
Django==2.2.3
djangorestframework==3.10.1
djangorestframework-jsonapi==2.8.0
inflection==0.3.1
pytz==2019.1
six==1.12.0
sqlparse==0.3.0

I've added the default SETTINGS from the docs.

If I then

> python manage.py shell

>>> from rest_framework_json_api import views

Then I get an error thrown

Traceback (most recent call last):
  File "/Users/jonathanhollingsworth/.virtualenvs/dja-manual-test/lib/python3.7/site-packages/rest_framework/settings.py", line 177, in import_from_string
    return import_string(val)
  File "/Users/jonathanhollingsworth/.virtualenvs/dja-manual-test/lib/python3.7/site-packages/django/utils/module_loading.py", line 17, in import_string
    module = import_module(module_path)
  File "/Users/jonathanhollingsworth/.virtualenvs/dja-manual-test/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/Users/jonathanhollingsworth/.virtualenvs/dja-manual-test/lib/python3.7/site-packages/rest_framework_json_api/django_filters/__init__.py", line 1, in <module>
    from .backends import DjangoFilterBackend  # noqa: F401
  File "/Users/jonathanhollingsworth/.virtualenvs/dja-manual-test/lib/python3.7/site-packages/rest_framework_json_api/django_filters/backends.py", line 3, in <module>
    from django_filters import VERSION
ModuleNotFoundError: No module named 'django_filters'

Not sure where to go next with this one.
Am happy to put up the failing minimal case as a public repo if that is helpful.

[sliverc]

This is not really well documented but when using rest_framework_json_api.django_filters.DjangoFilterBackend it is also necessary to install django-filter or remove DjangoFilterBackend from your settings.

This will be cleaned up and better document with #674 when the different features are split up into different extra packages.

Hope this helps?

[JonForest]

Yeah, this helps a lot.
It wasn't obvious, as there is a django_filters folder in the rest_framework_json_api package.

I would have thought the import should work, but I've just looked at the file and seen it inherits from django_filters. Ahh... sorry, I should have seen that.

I'll close the issue now - thanks for the update.