__init__() got an unexpected keyword argument 'instance'

[Artem Bernatskyy]

Hello, i am using Django 1.10.7

And got this error

Traceback:

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django/core/handlers/exception.py" in inner
  42.             response = get_response(request)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
  187.                 response = self.process_exception_by_middleware(e, request)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
  185.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django/views/generic/base.py" in view
  68.             return self.dispatch(request, *args, **kwargs)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/braces/views/_access.py" in dispatch
  102.             request, *args, **kwargs)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/braces/views/_access.py" in dispatch
  341.             request, *args, **kwargs)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django/views/generic/base.py" in dispatch
  88.         return handler(request, *args, **kwargs)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django/views/generic/edit.py" in get
  213.         return super(BaseCreateView, self).get(request, *args, **kwargs)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django/views/generic/edit.py" in get
  174.         return self.render_to_response(self.get_context_data())

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django/views/generic/edit.py" in get_context_data
  93.             kwargs['form'] = self.get_form()

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django/views/generic/edit.py" in get_form
  45.         return form_class(**self.get_form_kwargs())

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django_superform/forms.py" in __init__
  160.         self._init_composite_fields()

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django_superform/forms.py" in _init_composite_fields
  212.             self._init_composite_field(name, field)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django_superform/forms.py" in _init_composite_field
  195.             formset = field.get_formset(self, name)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django_superform/fields.py" in get_formset
  371.             **kwargs)

File "/var/webapps/mtas_proj/env/local/lib/python2.7/site-packages/django/forms/models.py" in __init__
  568.         super(BaseModelFormSet, self).__init__(**defaults)

Exception Type: TypeError at /collection-manager/add/
Exception Value: __init__() got an unexpected keyword argument 'instance'

forms.py

from django import forms

from django_superform import SuperModelForm, InlineFormSetField

from .models import (
    Site, AdvancedSearchFields
)


class AdvancedSearchFieldsForm(forms.ModelForm):
    class Meta:
        model = AdvancedSearchFields
        fields = ['site', 'advanced_search_url', 'name', 'xpath']


AdvancedSearchFieldsFormSet = forms.modelformset_factory(model=AdvancedSearchFields,form=AdvancedSearchFieldsForm)


class SiteCreateForm(SuperModelForm):
    advanced_search_fields = InlineFormSetField(formset_class=AdvancedSearchFieldsFormSet)

    class Meta(object):
        model = Site

        fields = (
            'name',
            'description',
            'base_url',
            'site_type',
            'collection_speed',
            'registraton_url',
            'logout_url',
            'updates_url',
            'check_for_updates'
        )

[Artem Bernatskyy]

I will test if this resolves the issue.

[Artem Bernatskyy]

Nope, it didn't work for me.

[Artem Bernatskyy]

This also won't work .

[krriyo]

Looks like it is the way BaseModelFormSet handles kwargs. I'm trying to fix it, will let you know how that goes

[Mohammad Etemaddar]

The same in Django 1.11.5

[Hendrik Schneider]

Any news on this?

[Kalev Takkis]

Any news now? I can't keep removing **kwargs from init.

[Kartoophilus]

So still no solution on this??????????????????

[Jeremías Benitez]

Had this problem too. It happened because, on my form, I was inheriting from a custom ModelForm and from SuperModelForm. The solution ended up being inheriting from SuperModelFormMixin and my custom ModelForm.