def add_point(lesson_id): form = request.form d = dict( name=form.get('name', ''), target=form.get('target', ''), content=form.get('content', ''), created_time=timestamp(), updated_time=timestamp(), ) point = Point(**d) point.save() lesson = Lesson.objects.get(id=lesson_id) print('debug', lesson.id) lesson.insert_point(point) # return redirect(url_for('.write_point', lesson_id=point.lesson_id)) return redirect(url_for('.write_point', lesson_id=lesson_id))