Import foreign keys that do not exist (creating new values in Foreign key)

I am trying to import values which do not already exist my foreign key. I would like import/export to add these new values to the ForeignKey model.

I’ve tried adding “null/blank” to the models, but it still will not create (import) new values in the foreign key. The error I get is “DoesNotExist: x matching query does not exist.”

Here is a sample of my Admin.py (which only imports to a foreign key if the values being imported already exist).

store_name = fields.Field(column_name='store_name', attribute='Store', widget=widgets.ForeignKeyWidget(Store, 'store_name'))
def clean(self, value):
        val = super(ForeignKeyWidget, self).clean(value)
        object, created = Store.objects.get_or_create(store_name='')
class Meta:
    model = Product
    fields = ('id', 'second_name', 'product_name', store',)
    export_order = ('id', 'second_name', 'product_name')
    skip_unchanged = False
    report_skipped = False
    widgets = {
            'published': {'format': '%d.%m.%Y'},
            }

Can anyone advise please?

Thanks

[int-ua]

I’ve written it this way:

class ForeignKeyWidgetWithCreation(ForeignKeyWidget):
    def __init__(
            self,
            model,
            field='pk',
            create=False,
            *args, **kwargs):
        self.model = model
        self.field = field
        self.create = create
        # super(ForeignKeyWidgetWithCreation, self).__init__(*args, **kwargs)

    def clean(self, value):
        val = super(ForeignKeyWidgetWithCreation, self).clean(value)
        if self.create:
            instance, new = self.model.objects.get_or_create(**{
                self.field: val
            })
            val = getattr(instance, self.field)
        return self.model.objects.get(**{self.field: val}) if val else None

Usage example

class SomeModelResource(Resource):
    field1 = fields.Field(
        attribute='field1',
        widget=ForeignKeyWidgetWithCreation(
            OtherModel,
            field='name',
            create=True))

[int-ua]

def clean(self, value, row=None, *args, **kwargs): https://github.com/django-import-export/django-import-export/commit/8e81b409aae501d1f882f4a4fd458112c2eccac1#diff-948ac927a7e0c8c8d0bb8026e9a49d62L288