views.py 文件源码

def get(self, request):
        """
        Method used to render the view when form is not submitted.
        """
        objects = self.get_objects()
        formset = None

        if len(objects) > 0:
            ObjectFormSet = formset_factory(self.form_model, extra=0)
            formset = ObjectFormSet(initial=objects)
        else:
            messages.info(request, 'No data to import.')
            return redirect(self.get_return_url())

        return render(request, self.template, {
            'formset': formset,
            'obj_type': self.form_model._meta.model._meta.verbose_name,
            'return_url': self.get_return_url(),
        })