模型分离（选做）

from datetime import datetime
from werkzeug.security import generate_password_hash,check_password_hash
from exts import db

class User(db.Model):
    __tablename__ = ‘user‘
    # __tablename__ = ‘user_test‘
    id=db.Column(db.Integer,primary_key=True,autoincrement=True)
    username=db.Column(db.String(20),nullable=False)
    _password = db.Column(db.String(200), nullable=False)#内部使用
    nickname = db.Column(db.String(20))
    tel = db.Column(db.String(20))


    @property
    def password(self):#外部使用
        return self._password

    @password.setter
    def password(self,row_password):
        self._password=generate_password_hash(row_password)

    def check_password(self,row_password):
        result=check_password_hash(self._password,row_password)
        return result

class Question(db.Model):
    __tablename__ = ‘question‘
    id=db.Column(db.Integer,primary_key=True,autoincrement=True)
    title = db.Column(db.String(100),nullable=False)
    detail = db.Column(db.Text,nullable=False)
    creat_time = db.Column(db.DateTime,default=datetime.now)
    author_id = db.Column(db.Integer,db.ForeignKey(‘user.id‘))
    author = db.relationship(‘User‘,backref=db.backref(‘question‘))

class Comment(db.Model):
    __tablename__ = ‘comment‘
    id=db.Column(db.Integer,primary_key=True,autoincrement=True)
    author_id = db.Column(db.Integer, db.ForeignKey(‘user.id‘))
    question_id = db.Column(db.Integer, db.ForeignKey(‘question.id‘))
    detail = db.Column(db.Text,nullable=False)
    creat_time = db.Column(db.DateTime,default=datetime.now)
    question = db.relationship(‘Question‘,backref=db.backref(‘comments‘))
    author = db.relationship(‘User‘,backref=db.backref(‘comments‘))

from flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy()

from models import Question,User,Comment
from exts import db
from decorate import loginFirst
app = Flask(__name__)
app.config.from_object(config)

db.init_app(app)