原 http://192.168.1.160:5000/stb/bind/02:8B:02:C1:B4:DA/?page=1
重定向后 http://192.168.1.160:5000/stb/bind/02:8B:02:C1:B4:DA/?page=1

 def post(self, mac):
    checked_user = request.form.get('data_sn', '')
    if checked_user:
        add = Stb.query.filter(Stb.mac == mac).first()
        add.bind_user = checked_user
        db.session.commit()

    return redirect(url_for('epg.list', _external=True))