1 接收表單數據
### 適用於 flask 表單生成 HTML文檔框
form.data ==> {'password_old': '111', 'password_new': '111', 'password2': '111', 'submit': True, 'csrf_token': '***'}
form.email ==> <input id="password2" name="password2" required type="password" value="">
form.email.data ==> [email protected]2 flask-login
### 用於獲取當前登陸用戶
current_user ==> <User 'kongxiaofa1993'>
current_user.username ==> kongxianfa1993