Python 如何使用 Flask 检索会话数据？
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How to retrieve session data with Flask?
提问by webminal.org
I have flask+wtforms application. I can see in login() user object stored as
我有烧瓶+wtforms 应用程序。我可以在 login() 用户对象中看到存储为
if user:
if user.verify_password(form.password.data):
flash('You have been logged in')
user.logins += 1
db.session.add(History(user.uid))
db.session.commit()
session['user'] = user
Now I wanted to retrieve the user
现在我想检索用户
if 'user' in session:
User=session.get('user')
print User.nickname ###<< how to retrieve specific object member?
It fails with message like :
它失败并显示如下消息：
Instance <User at 0x8e5a64c> is not bound to a Session; attribute refresh operation cannot proceed
采纳答案by eandersson
It's simple. If you want to retrieve a specific object simply add the name of the variable within session, e.g. session['nickname'].
这很简单。如果您想检索特定对象，只需在会话中添加变量的名称，例如session['nickname'].
You can set the variable the same way, by doing session['nickname'] = nickname.
您可以通过执行相同的方式设置变量session['nickname'] = nickname。
In your case you would change it to the following
在您的情况下，您可以将其更改为以下内容
if 'user' in session:
user = session['user']
print user
if 'nickname' in session:
nickname = session['nickname']
print nickname
This is an simplified version of the function I use for login.
这是我用于登录的函数的简化版本。
@app.route('/login', methods=['POST'])
def login():
"""Authenticate User"""
username = request.form['username'].strip()
nickname = request.form['nickname'].strip()
password = request.form['password']
try:
if Auth().VerifyLogin(username, password):
session['username'] = username
session['nickname'] = nickname
else:
# failed to login, do something.
except Exception as why:
app.logger.critical('.....')
