通过用户模型，对数据库进行增删改查操作（2017.11.15）

Posted 2020-10-14 赖黛俐

增加：
db.session.add(user)
db.session.commit()

查询：
User.query.filter(User.username == \'mis1114\').first()

修改：
user.password = \'111111\'
db.session.commit()

删除：
db.session.delete(user)
db.session.commit()

from flask import Flask, render_template
from flask_sqlalchemy import SQLAlchemy
import config

app = Flask(__name__)

app.config.from_object(config)
db = SQLAlchemy(app)


class User(db.Model):
    __tablename__=\'user\'
    id=db.Column(db.Integer,primary_key=TabError,autoincrement=True)
    username = db.Column(db.String(20), nullable=False)
    password = db.Column(db.String(20), nullable=False)
#增加
user = User(username =\'vixx\',password=\'20120524\' )
db.session.add(user)
db.session.commit()
#查询
user=User.query.filter(User.username ==\'vixx\').first()
print(user.username,user.password)
#删除
user=User.query.filter(User.username ==\'vixx\').first()
db.session.delete(user)
db.session.commit()
#修改
user=User.query.filter(User.username ==\'vixx\').first()
user.password=\'123456789\'
db.session.commit()
@app.route(\'/\')
def base():
    return render_template(\'base.html\')


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


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


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


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


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


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