view.py

class TestView(LoginRequiredMixin, UserPassesTestMixin, View):
    model = Foo

    def make_dataset(self):
        """This method returns an instance of tablib.Dataset."""
        pass

    def get(self, request, **kwargs):
        # Create empty dataset
        dataset = self.make_dataset()
        response = HttpResponse(content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
        response[
            'Content-Disposition'] = 'attachment; filename="Test.xlsx"')
        response.write(dataset.xlsx)
        return response