Question

我已经阅读了相当多的文档，我看不出这些行有什么问题

update_this = User.query.filter_by(email=email).first()
update_this.emailconfirmed = True
db.session.commit()

...然而当我部署布尔列时，电子邮件确认了＆＃39;永远不会更新为True。我已经使用打印语句确认update_this.emailconfirmed在上面显示的代码中的确切位置为False ...我似乎无法更新该值。有谁知道我可以做什么测试，我应该检查哪些进口等等。

现在这是我的主.py文件的顶部，其中出现上述代码

from flask import Flask, render_template, request, session, redirect, url_for, make_response
# the following line imports from models.py
from models import db, User
# the following line imports SignupForm from forms.py
from forms import SignupForm, LoginForm
from flask_mail import Mail, Message
from itsdangerous import URLSafeTimedSerializer

# Production (causes Heroku to redirect to SSL)
from flask_sslify import SSLify
from flask_sqlalchemy import SQLAlchemy


import os
app = Flask(__name__)
sslify = SSLify(app)
sslify = SSLify(app, subdomains=True)
app.config.from_pyfile('config_file.cfg')
app.config['SQLALCHEMY_DATABASE_URI'] = os.environ['DATABASE_URL']
db = SQLAlchemy(app)
mail = Mail(app)
ts = URLSafeTimedSerializer(app.config['SECRET_KEY'], salt=app.config['SALT'])

这是我的models.py文件

from flask_sqlalchemy import SQLAlchemy
from werkzeug import generate_password_hash, check_password_hash


db = SQLAlchemy()

class User(db.Model):
    __tablename__ = 'users'
    id = db.Column(db.Integer, primary_key=True)
    firstname = db.Column(db.String(100))
    lastname = db.Column(db.String(100))
    role = db.Column(db.String(20))
    roleapproved = db.Column(db.Boolean)
    school = db.Column(db.String(100))
    email = db.Column(db.String(120), unique=True)
    emailconfirmed = db.Column(db.Boolean)
    pwdhash = db.Column(db.String(100))


    def __init__(self, firstname, lastname, role, school, email, password):
        self.firstname = firstname.title()
        self.lastname = lastname.title()
        self.role = role.lower()
        if role.lower() == 'student':
            self.roleapproved = True
        if role.lower() == 'teacher':
            self.roleapproved = False
        self.school = school.title()
        self.email = email.lower()
        self.set_password(password)
        self.emailconfirmed = False

    def set_password(self, password):
        self.pwdhash = generate_password_hash(password)

    def check_password(self, password):
        return check_password_hash(self.pwdhash, password)

    def __repr__(self):
        return '<User {0}>'.format(self.email)

我非常感谢上面提到的有关更新的任何帮助!!

Answer 1

理想情况下，您希望在整个应用程序生命周期中维护单个会话。通过这种方式，可以轻松推理并避免将会话绑定到单个模型。

谢谢@Ilja Everila

在main.py而不是初始化SQLAlchemy 你应该写，

db.init_app(app)

~~为您的用户模型定义save实例方法。~~

def save(self): """Saves model object instance """ db.session.add(self) db.session.commit()

您可以调用此方法将实例另存为

update_this.save()

更新实体的另一种方法是在提交之前获取特定的对象会话

from sqlachemy.orm import session ... session = session.object_session(update_this) session.commit()

更新状态with flask sqlalchemy with postgres不会提交到数据库

1 个答案: