模型分离(选做)
模型分离--让代码更方便管理
新建models.py,将模型定义全部放到这个独立的文件中。
新建exts.py,将db = SQLAlchemy()的定义放到这个独立的文件中。
models.py和主py文件,都从exts.py中导入db。
在主py文件中,对db进行始化,db.init_app(app)。
from flask_sqlalchemy import SQLAlchemy db = SQLAlchemy()
from datetime import datetime from werkzeug.security import generate_password_hash,check_password_hash from exit import db class User(db.Model): __tablename__ = 'user' 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(50)) @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 # db.create_all() class Fankui(db.Model): __tablename__ = 'fankui' id = db.Column(db.Integer,primary_key=True,autoincrement=True) biaoti = db.Column(db.String(100),nullable=False) questionDetail = 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('fankui')) 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')) fankui_id= db.Column(db.Integer,db.ForeignKey('fankui.id')) creat_time = db.Column(db.DateTime, default=datetime.now) detail=db.Column(db.Text,nullable=False) fankui = db.relationship('Fankui',backref=db.backref('comment', order_by=creat_time.desc)) author = db.relationship('User',backref=db.backref('comment'))
from flask import Flask, render_template,request,redirect,url_for,session # from flask_sqlalchemy import SQLAlchemy import config from functools import wraps from sqlalchemy import or_,and_ from modle import User,Fankui,Comment from exit import db # from datetime import datetime app = Flask(__name__) app.config.from_object(config) db.init_app(app)