rixx / django-22-issue

This repo documents a potential issue in Django 2.2.

Reproduce the issue

Either via tests:

pip install django pytest pytest-django
cd fktest
DJANGO_SETTINGS_MODULE=fktest.settings pytest

Or via the Python REPL:

python manage.py makemigrations
python manage.py migrate
python manage.py shell

from fk.models import Author, Book
a = Author.objects.create(name='Bill')
b1 = Book.objects.create(title='Sonnets', state='deleted')
b2 = Book.objects.create(title='Hamlet')
b1.authors.add(a)
b2.authors.add(a)
a.books.count()  # 2
a.books.all().count()  # 1