烧瓶基本查询对象不可调用吗？ [重复]

Question

此问题已经在这里有了答案：

Querying with function on Flask-SQLAlchemy model gives BaseQuery object is not callable error（1个答案）

关闭上个月。

我正在做一个项目。在此之后设置flask-login系统时，出现错误。

错误：

TypeError：'BaseQuery'对象不可调用

当我删除flask-login system时。它正在工作，但我需要使用。

@login_manager.user_loader
def load_user(user_id):
    return Login.query(user_id) # <<------------- Problem is here --------------->>

如果我使用Login.query(user_id)代替db.session.query(Login).filter_by(id=user_id)。

[AttributeError：'BaseQuery'对象没有属性'is_authenticated']

我试图弄清楚我在做什么错，但还是不知道？

Model.py

from flask_login import UserMixin
from run import db, date


class Login(db.Model, UserMixin):
    __tablename__ = 'login'
    id = db.Column('No', db.Integer, primary_key=True)
    name = db.Column('Username', db.String(50), nullable=False)
    email = db.Column('Email', db.String(100), nullable=False)
    password = db.Column('Password', db.String(50), nullable=False)
    date = db.Column('Date', db.String(20), nullable=False, default=date)

    @property
    def is_authenticated(self):
        return True
    @property
    def is_active(self):
        return True
    @property
    def is_anonymous(self):
        return True
    @property
    def get_id(self):
        return self.id
    @property
    def __repr__(self):
        return '<Login(name=%s, email=%s, password=%s, date=%s)>' % (self.name, self.email, self.password, self.date)

route.py

from flask import render_template, redirect, url_for, request, flash
from model import Post, Contacts, Login_form, Signup_form, Login
from flask_login import login_required, login_user, current_user
from run import app, db, login_manager


# user id loader <<--------------- Problem is here 'flask-login query' ---------------------->>
@login_manager.user_loader
def load_user(user_id):
    return Login.query(user_id)


@app.route('/')
@login_required
def index():
    posts = db.session.query(Post).all()
    return render_template('index.html', posts=posts)

@app.route('/about')
def about():
    return render_template('about.html')

@app.route('/add_post')
@login_required
def add_posts():
    return render_template('add_post.html')

@app.route('/post')
@login_required
def post():
    all_post = db.session.query(Post).all()
    return render_template('post.html', posts=all_post)


@app.route('/contact', methods=['POST','GET'])
@login_required
def contact():
    if request.method=='POST':
        name = request.form['name']
        email = request.form['email']
        phone = request.form['phone']
        msg = request.form['message']
        contact_form = Contacts(naem=name, email=email, phone=phone, message=msg)
        db.session.add(contact_form)
        db.session.commit()
        return redirect(url_for('index'))
    else: return render_template('contact.html')

@app.route('/<int:no>/post')
@login_required
def post_direction(no):
    posts = db.session.query(Post).filter_by(id=no).first()
    return render_template('post.html', posts=posts)


@app.route('/login', methods=['POST', 'GET'])
def login():
    log_in = Login_form()
    if log_in.validate_on_submit():
        if log_in.email.data !='' and log_in.password.data !='':
            check = db.session.query(Login).filter_by(email=log_in.email.data)
            if check and check.password == log_in.password.data:
                login_user(check, remember=log_in.remember.data)
                return redirect(request.args.get('next'), 'index')
            else:
                flash(u'Email and password not matching!', 'Invalid')
        else:
            flash(u'Invalid email1 and password!', 'Invalid')
    else:
        return render_template('login.html', Login_form=log_in)

@app.route('/signup', methods=['POST', 'GET'])
def signup():
    return render_template('signup.html', Signup_form=Signup_form('/signup'))


# unauthorized handle
@login_manager.unauthorized_handler
def unauthorized():
    return redirect(url_for('login'))

@app.errorhandler(404)
def error(e):
    return render_template('404.html')

run.py

from flask import Flask
from flask_admin import Admin
from flask_sqlalchemy import SQLAlchemy
from flask_login import LoginManager
from flask_bootstrap import Bootstrap


app = Flask(__name__, static_folder='static', template_folder='template')
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql://root:@localhost/flask'
upload_path = './static/img'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True
app.config['UPLOAD_FOLDER'] = upload_path
app.config['SECRET_KEY'] = 'super_secret'


db = SQLAlchemy(app)
admin = Admin(app, template_mode='bootstrap3')
bootstrap = Bootstrap(app)

login_manager = LoginManager(app)
login_manager.init_app(app)



from route import *



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

index.html

<html>
.......
</html>

Answer 1

要通过ID获取，请使用：

Login.query.get(user_id)

[Login.query是db.session.query(Login)的快捷方式，不可调用。

请参阅Flask-SQLAlchemy文档：

• Querying Records

• flask_sqlalchemy.BaseQuery