为什么我的db session commit不工作？

Question

我想更新我的个人资料，但我的db.session.commit提交（）在空闲时不起作用，当我试穿PythonShell时，它就起作用了。我不知道为什么，请帮帮我。对不起我的英语

@app.route('/edit/<username>',methods=['POST','GET'])
@login_required
def edit(username):
  form = ProfileForm(request.form)
  if request.method=='POST' and form.validate():
     t_user = User.query.filter_by(username=username).first()
     t_infor = Infor.query.with_parent(t_user).filter_by(user_id=t_user.id).first()
     t_infor.phone = form.phone.data
     t_infor.mail = form.mail.data
     db.session.commit()
     return redirect(url_for('profile',username=username))
  return render_template('edit.html',form=form,username=username)

@app.route('/profile/<username>')
@login_required
def profile(username): 
  t_user = User.query.filter_by(username=username).first()
  t_infor = Infor.query.with_parent(t_user).filter_by(user_id=t_user.id).first()
  ifmt=[{
  'name': t_user.name,
  'phone':t_infor.phone,
  'mail':t_infor.mail
  }]
  return render_template('profile.html',username=username,ifmt=ifmt)