更确切地说。我目前正在从Corey Schafers教程系列中学习Flask,并且我处于登录身份验证阶段,一切似乎都很好,但是尝试登录后出现了此错误:
AttributeError:“用户”对象没有属性“ is_active”
定义了User类的我的代码如下:
from datetime import datetime
from flaskblog import db, login_manager
from flask_login import UserMixin
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
class User(UserMixin, db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(20), unique=True, nullable=False)
email = db.Column(db.String(120), unique=True, nullable=False)
image_file = db.Column(db.String(20), nullable=False, default='default.jpg')
password = db.Column(db.String(60), nullable=False)
posts = db.relationship('Post', backref='author', lazy=True)
def __repr__(self):
return f"User('{self.username}', '{self.email}', '{self.image_file}')"
我的带有登录页面路由的代码如下:
from flaskblog.models import User, Post
from flask import render_template, url_for, flash, redirect
from flaskblog.forms import RegistrationForm, LoginForm
from flaskblog import app, db, bcrypt
from flask_login import login_user
@app.route("/login", methods=['GET', 'POST'])
def login():
form = LoginForm()
if form.validate_on_submit():
user = User.query.filter_by(email=form.email.data).first()
if user and bcrypt.check_password_hash(user.password, form.password.data):
login_user(user, remember=form.remember.data)
return redirect(url_for('home'))
else:
flash('Login Unsuccessful. Please check email and password', 'danger')
return render_template('login.html', title='Login', form=form)
最怪异的部分是,即使在我编辑类User以便它本身包含方法“ is_active”时,错误出现时仍然保持。
from datetime import datetime
from flaskblog import db, login_manager
from flask_login import UserMixin
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
class User(UserMixin, db.Model):
def is_active():
return True
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(20), unique=True, nullable=False)
email = db.Column(db.String(120), unique=True, nullable=False)
image_file = db.Column(db.String(20), nullable=False, default='default.jpg')
password = db.Column(db.String(60), nullable=False)
posts = db.relationship('Post', backref='author', lazy=True)
def __repr__(self):
return f"User('{self.username}', '{self.email}', '{self.image_file}')"
此外,如果有帮助,在多台计算机上的多个操作系统上也会发生相同的问题。
我认为您的继承顺序是错误的
尝试通过这种方式创建User
类:
class User(db.Model, UserMixin):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(20), unique=True, nullable=False)
email = db.Column(db.String(120), unique=True, nullable=False)
image_file = db.Column(db.String(20), nullable=False, default='default.jpg')
password = db.Column(db.String(60), nullable=False)
posts = db.relationship('Post', backref='author', lazy=True)
在此处查看答案以更详细地了解:How does Python's super() work with multiple inheritance?
让我知道这是否可行。