Add "widgets" argument to function's modelformset_factory inputs

[Agris Ameriks]

Function modelformset_factory doesn't have widgets=None in it's input arguments, but function modelform_factory (which is called from def modelformset_factory) widgets is defined as optional input argument.

As the fix is in 2 lines, then I included it in the description.

So the fix would be:

def modelformset_factory(model, form=ModelForm, formfield_callback=None,
                         formset=BaseModelFormSet,
                         extra=1, can_delete=False, can_order=False,
                         max_num=None, fields=None, exclude=None, widgets=None):
    """
    Returns a FormSet class for the given Django model class.
    """
    form = modelform_factory(model, form=form, fields=fields, exclude=exclude,
                             formfield_callback=formfield_callback, widgets=widgets)
    FormSet = formset_factory(form, formset, extra=extra, max_num=max_num,
                              can_order=can_order, can_delete=can_delete)
    FormSet.model = model
    return FormSet

[Anssi Kääriäinen]

Seems like a good addition to me. This likely needs docs changes. And, we want a simple test, too...

[Nick Sandford]

Added a pull request with tests and documentation fixes.

[Claude Paroz]

Should we guess the pull request location?

[Nick Sandford]

Ooh, sorry: ​https://github.com/django/django/pull/630

[Claude Paroz]

Seems a duplicate of #17416.