docs: def get_widget(self, request):
          """
          Table view is not able to get form field from reverse relation.
          Therefore this widget returns similar form field as direct relation (ModelChoiceField).
          Because there is used "RestrictedSelectWidget" it is returned textarea or selectox with choices according to
          count objects in the queryset.
          """
          return self._update_widget_choices(
              forms.ModelChoiceField(
                  widget=RestrictedSelectWidget, queryset=self.field.related_model._default_manager.all()
              ).widget
          )