Unable to export using ImportExportModelAdmin

Using ‘import-export v==1.0.1’

This is my stack trace:

Traceback:

File "/Users/fmirdita/Projects/django/django/core/handlers/exception.py" in inner
35. response = get_response(request)

File "/Users/fmirdita/Projects/django/django/core/handlers/base.py" in _get_response
128. response = self.process_exception_by_middleware(e, request)

File "/Users/fmirdita/Projects/django/django/core/handlers/base.py" in _get_response
126. response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/Users/fmirdita/Projects/django/django/utils/decorators.py" in _wrapped_view
142. response = view_func(request, *args, **kwargs)

File "/Users/fmirdita/Projects/django/django/views/decorators/cache.py" in _wrapped_view_func
44. response = view_func(request, *args, **kwargs)

File "/Users/fmirdita/Projects/django/django/contrib/admin/sites.py" in inner
223. return view(request, *args, **kwargs)

File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/import_export/admin.py" in export_action
403. queryset = self.get_export_queryset(request)

File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/import_export/admin.py" in get_export_queryset
374. self.list_max_show_all, self.list_editable, self

Exception Type: TypeError at /admin/reception/person/export/
Exception Value: init() missing 1 required positional argument: 'sortable_by'

My ModelAdmin class inherits from ImportExportModelAdmin, and when using the admin interface I can click export and choose CSV from a dropdown. Upon submitting, I get error TypeError at /admin/reception/service/export/ __init__() missing 1 required positional argument: 'sortable_by'

Looking at ExportMixIn get_export_queryset it appears the error comes from this line: cl = ChangeList(request, self.model, list_display, list_display_links, list_filter, self.date_hierarchy, search_fields, self.list_select_related, self.list_per_page, self.list_max_show_all, self.list_editable, self )

From ChangeList docs: class ChangeList: def __init__(self, request, model, list_display, list_display_links, list_filter, date_hierarchy, search_fields, list_select_related, list_per_page, list_max_show_all, list_editable, model_admin, sortable_by):

I’m not sure why it’s just self at the end of of that line of the get_export_queryset method in the ExportMixIn class. It seems there might be a missing argument for this line?

What else I’ve tried: In my ModelAdmin I put resource_class = ModelResource and wrote a corresponding ModelResource for each of my models. I was able to run

>>> from app.admin import ModelResource
>>> dataset = ModelResource.export()
>>> print(dataset.csv)
-printed correct model data-

So clearly the export functionality works, but not with the admin interface. Thanks for the help!

Update: Found a temporary fix by overriding the get_export_queryset function in the ModelAdmin that inherits the ImportExportModelAdmin class. I just passed in None:

    def get_export_queryset(self, request):
            """
            Returns export queryset.
            Default implementation respects applied search and filters.
            """
            list_display = self.get_list_display(request)
            list_display_links = self.get_list_display_links(request, list_display)
            list_filter = self.get_list_filter(request)
            search_fields = self.get_search_fields(request)
            if self.get_actions(request):
                list_display = ['action_checkbox'] + list(list_display)

            ChangeList = self.get_changelist(request)
            cl = ChangeList(request, self.model, list_display,
                            list_display_links, list_filter, self.date_hierarchy,
                            search_fields, self.list_select_related, self.list_per_page,
                            self.list_max_show_all, self.list_editable, self, None
                            )

            return cl.get_queryset(request)

Update: Alternative solution #2: I’m also capable of exporting using ImportExportActionModelAdmin, so I’m just using that class.

[msrshahrukh100]

when will the new release be coming? i am still facing this issue

[bmihelac]

@fmirdita thanks for opening this issue

new keyword argument sortable_by was added in Django 2.1: https://docs.djangoproject.com/en/2.1/ref/contrib/admin/#django.contrib.admin.ModelAdmin.get_sortable_by