Question

我是Flask的新手，并遵循CS50-Web编程课程。我的代码与讲师运行的代码相同，但无法正常工作，这使我相信我需要对代码进行一些更新，因为该视频已有2年的历史。

我的问题是我的代码列表在请求之间不存在。

这是我的app.py

from flask import Flask, render_template, request, session
from flask_session import Session

app = Flask(__name__)

app.config["SESSION_PERMANENT"] = False
app.config["SESSION_TYPE"] = "filesystem"
#app.config['SECRET_KEY'] = 'super secret' Tried this didn't fix anything
Session(app)



@app.route("/", methods=["GET","POST"])
def index():
    print(session["notes"])
    if session.get("notes") is None:
        session["notes"] = []
    if request.method == "POST": # If the request method is POST, then I . . .
        note = request.form.get("note") # Get the note I am trying to add and...
        session["notes"].append(note) # Add it
        print(session["notes"])

    return render_template("index.html", notes=session["notes"]) # Return to the page the notes.

和我相关的index.html

{% extends 'layout.html' %}

{% block heading %}
    Notes
{% endblock heading %}

{% block body %}
    <ul>
        {% for note in notes %}
            <li>{{ note }}</li>
        {% endfor %}
    </ul>

    <form action="{{ url_for('index') }}" method="POST">
        <input type="text" name="note" placeholder="Enter Note Here">
        <button>Add Note</button>
    </form>

    {% endblock body %}

有人知道为什么它不持久吗？

这也是我的终端在两次请求之间输出的信息

127.0.0.1 - - [18/May/2020 20:30:12] "GET / HTTP/1.1" 200 -
[]        ---- Empty on first run, good so far
127.0.0.1 - - [18/May/2020 20:30:14] "POST / HTTP/1.1" 200 -
['Y']     ---- Y added, also good
127.0.0.1 - - [18/May/2020 20:30:16] "POST / HTTP/1.1" 200 -
[]        ---- Y gone! What happened?!?!

感谢您的帮助！

烧瓶会话列表不持久

0 个答案: