TypeError: _bulk_create() got an unexpected keyword argument 'ignore_conflicts'.

[Shivam Chaurasia]

Code:

I get error in using .add() and .set() functions with many to many keys in models.
I rolled back to Django-2.2.12 and this issue was gone.

class GroupSerializer(serializers.ModelSerializer):
    permissions = PermissionSerializerGroup(many=True, required=False)

    class Meta:
        model = Group
        fields = ('id', 'name', 'permissions')
        extra_kwargs = {
            'name': {'validators': []},
        }

    def create(self, validated_data):
        print(validated_data)
        permissions_data = validated_data.pop("permissions")
        obj, group = Group.objects.update_or_create(name=validated_data["name"])
        obj.permissions.clear()
        for permission in permissions_data:
            per = Permission.objects.get(codename=permission["codename"])
            obj.permissions.add(per)
        obj.save()
        return obj

Traceback:

  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/core/handlers/base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/core/handlers/base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/contrib/admin/options.py", line 607, in wrapper
    return self.admin_site.admin_view(view)(*args, **kwargs)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/utils/decorators.py", line 130, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/views/decorators/cache.py", line 44, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/contrib/admin/sites.py", line 231, in inner
    return view(request, *args, **kwargs)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/contrib/admin/options.py", line 1638, in add_view
    return self.changeform_view(request, None, form_url, extra_context)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/utils/decorators.py", line 43, in _wrapper
    return bound_method(*args, **kwargs)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/utils/decorators.py", line 130, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/contrib/admin/options.py", line 1522, in changeform_view
    return self._changeform_view(request, object_id, form_url, extra_context)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/contrib/admin/options.py", line 1566, in _changeform_view
    self.save_related(request, form, formsets, not add)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/contrib/admin/options.py", line 1107, in save_related
    form.save_m2m()
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/forms/models.py", line 442, in _save_m2m
    f.save_form_data(self.instance, cleaned_data[f.name])
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/db/models/fields/related.py", line 1618, in save_form_data
    getattr(instance, self.attname).set(data)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/db/models/fields/related_descriptors.py", line 1008, in set
    self.add(*new_objs, through_defaults=through_defaults)
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/db/models/fields/related_descriptors.py", line 946, in add
    through_defaults=through_defaults,
  File "/home/suman/Desktop/suman1234/myvenv/lib/python3.6/site-packages/django/db/models/fields/related_descriptors.py", line 1129, in _add_items
    ], ignore_conflicts=True)
TypeError: _bulk_create() got an unexpected keyword argument 'ignore_conflicts'

[Mariusz Felisiak]

Thanks for this ticket, however I cannot reproduce this issue, moreover _bulk_create() (with leading underscore) never existed in the Django. Can you provide a sample project to reproduce this issue?

[Ethan Meanor]

I am having the same issue in 3.1. This happens when calling .add() both from Django project files and from the shell. You should be able to reproduce it in this project:
​https://github.com/emeanor/wtp/

Specifically, the error is being generated in /texts/tests.py, by the function test_can_be_attached_to_multiple_divisions (currently commented out):
​https://github.com/emeanor/wtp/blob/main/texts/tests.py

    def test_can_be_attached_to_multiple_divisions(self):
        edition = Edition.objects.create()
        divisions = [Division.objects.create(edition=edition) for i in range(3)]

        for division in divisions:
            division.texts.add(self.text) # .add() is the error source.

        self.assertEquals(len(divisions), self.text.division_set.count())

        for division in divisions:
            self.assertIn(division, self.text.division_set)

Trackeback:

Traceback (most recent call last):
  File "/home/ethan/dev/projects/wtp/texts/tests.py", line 41, in test_can_be_attached_to_multiple_divisions
    division.texts.add(self.text)
  File "/home/ethan/dev/.venv/wtp/lib/python3.8/site-packages/django/db/models/fields/related_descriptors.py", line 950, in add
    self._add_items(
  File "/home/ethan/dev/.venv/wtp/lib/python3.8/site-packages/django/db/models/fields/related_descriptors.py", line 1150, in _add_items
    self.through._default_manager.using(db).bulk_create([
TypeError: bulk_create() got an unexpected keyword argument 'ignore_conflicts'

Note that bulk_create() here does not have the leading underscore.

[Tim Graham]

That looks like an issue with
​django-ordered-model. When providing steps to reproduce an issue, try to remove all third-party dependencies to rule out a bug there.