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  • 通过用户模型,对数据库进行增删改查操作(2017.11.15)

    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)

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  • 原文地址:https://www.cnblogs.com/laidaili/p/7839469.html
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