使用 SQLAlchemy 的 hybrid_property 时，Flask 找不到 'password' 字段

Question

我正在学习 Flask，并且正在试用 exploreflask tutorial。我的注册表不起作用。错误在 server.py 中并表示：

password = form.password.data

TypeError: __init__() got an unexpected keyword argument 'password'

我正在使用 Flask-SQLAlchemy 的 declarative_base，所以我相信密码上的 hybrid_property 应该可以正常工作，但事实并非如此！

models.py:

from flask.ext.login import UserMixin
from flask.ext.bcrypt import Bcrypt
from sqlalchemy.ext.hybrid import hybrid_property
from sqlalchemy import Column, Integer, String
from database import Base

# Base is using Flask-SqlAlchemy's declarative_base()
class User(Base, UserMixin):
    __tablename__ = 'users'
    id = Column(Integer, primary_key=True)
    email = Column(String(120), unique=True)
    _password = Column(String(120))

    def __init__(self, name=None, email=None):
        self.email = email

    def __repr__(self):
        return '<User %r>' % (self.name)

    @hybrid_property
    def password(self):
        return self._password

    @password.setter
    def _set_password(self, plaintext):
        self._password = bcrypt.generate_password_hash(plaintext)

    def verify_password(self, plaintext):
        return bcrypt.check_password_hash(self._password, plaintext)

forms.py:

from flask_wtf import Form
from wtforms import StringField, PasswordField
from wtforms.fields.html5 import EmailField
from wtforms.validators import InputRequired

class RegisterForm(Form):
    email = EmailField('email', validators=[InputRequired()])
    password = PasswordField('password', validators=[InputRequired()])

server.py:

@app.route('/register', methods=["GET", "POST"])
def register():
    form = RegisterForm()
    if form.validate_on_submit():
        user = User(
            email = form.email.data,
            password = form.password.data
        )

        db_session.add(user)
        db_session.commit()
        return redirect(url_for('login.html'))
    return render_template('register.html', form=form)

我不确定哪里出了问题？

Answer 1

在 server.py 中，您正在使用电子邮件和密码初始化用户实例。但是，User class 的构造函数只接受参数名称和电子邮件。

所以你应该改变你的构造函数，让它也接受密码。

def __init__(self, name=None, email=None, password=None)
    #your constructor logic

使用 SQLAlchemy 的 hybrid_property 时，Flask 找不到 'password' 字段

Flask can't find 'password' field when using SQLAlchemy's hybrid_property

python

flask

flask-sqlalchemy

flask-wtforms