Make confirm_form accessible in get_import_resource_kwargs

[chrismerck]

Problem

get_import_resource_kwargs should allow an ImportForm (and ConfirmImportForm) to provide customization of a Resource instance.

get_import_resource_kwargs is called in two places:

1. when processing the ImportForm
2. when processing the ConfirmImportForm

The first call passes form=form keyword argument, but the latter call does not pass form=confirm_form.

Solution

I simply set the form keyword in the second call to get_import_resource_kwargs.

This permits usage like this:

class BookAdmin(ImportMixin, admin.ModelAdmin):
...
    def get_resource_kwargs(self, request, *args, **kwargs):
        form = kwargs['form']
        rv = {}
        if isinstance(form, BookFormMixin):
                if form.is_valid():
                    author = form.cleaned_data['author']
                    rv.update({'author': author.pk})
        return rv

Acceptance Criteria

I'm using this change in my application under development, but have not created a stripped-down example of this usage. I can do so if this change is not clearly desirable.

[coveralls]

Coverage remained the same at 95.675% when pulling c60a417 on chrismerck:chrismerck/girk_confirm_form into 141932b on django-import-export:master.

[coveralls]

Coverage remained the same at 95.675% when pulling c60a417 on chrismerck:chrismerck/girk_confirm_form into 141932b on django-import-export:master.

[andreynovikov]

This will partially fix #1034

[milutinke-vivify]

Can you merge this please :)

[milutinke-vivify]

@andreynovikov not quite I tried.
get_confirm_import_form(self) must be used, instead of explicitly using confirm_form = ConfirmImportForm(request.POST)

[andrewgy8]

Thanks! I just merged #1108 which is also very similar