如何在Flask中进行非永久会话

时间:2018-10-03 06:33:58

标签: python flask

我正在学习烧瓶,并且正在尝试将一些随机生成的数据与每个会话相关联。 我使用this answer中的方法将session.permanent设置为False,但是关闭浏览器,然后在返回页面时重新打开它仍显示相同的代码。

MWE:

from flask import Flask, session
import numpy as np

app = Flask(__name__)
app.secret_key = "supersecretkey"

@app.before_request
def make_session_permanent():
    session.permanent = False

@app.route('/')
def index():
    if 'id' not in session:
        random_id = "".join(np.random.choice(list("abcdefg123"), 16))
        session["id"] = random_id
    return session['id']

if __name__ == '__main__':
    app.run(debug=True)

更新:基于this answer,有人建议使用socketio注意到断开连接。这也没有什么区别,即关闭浏览器,然后重新打开,然后转到127.0.0.1:5000,该数字与关闭前的数字相同。使用此更新的MWE如下:

from flask import Flask, session
from flask_socketio import SocketIO
import numpy as np

app = Flask(__name__)
app.secret_key = "supersecretkey"

@app.before_request
def make_session_permanent():
    session.permanent = False

@app.route('/')
def index():
    if 'id' not in session:
        random_id = "".join(np.random.choice(list("abcdefg123"), 16))
        session["id"] = random_id
    return session['id']

socketio = SocketIO(app)
@socketio.on('disconnect')
def disconnect_user():
    session.pop('id', None)


if __name__ == '__main__':
    app.run(debug=True)

1 个答案:

答案 0 :(得分:0)

# Instantiate a new web application called `app`, 
# with `__name__` representing the current file
app = Flask(__name__) 

app.config["SESSION_PERMANENT"] = False