def render_next_step(self, form, **kwargs):
        next_step = self.get_next_step()
        self.storage.current_step = next_step
        return redirect(self.get_step_url(next_step))
When using the NamedUrlWizardView, we have to redirect to update the
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/formtools/wizard/views.py/NamedUrlWizardView.render_next_step