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  • 通过用户模型,对数据库进行增删改查操作

    增加:
    db.session.add(user)
    db.session.commit()
    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)
    
    user=User(username='mavenlon',password='666666')
    db.session.add(user)
    db.session.commit()
    


    查询:
    User.query.filter(User.username == 'mis1114').first()
    user=User.query.filter(User.username == 'mavenlon').first()
    print(user.username,user.password)
    

     

    修改:
    user.password = '111111'
    db.session.commit()
    user=User.query.filter(User.username == 'mavenlon').first()
    user.password=7777777
    db.session.commit()
    print(user.password)
    



    删除:
    db.session.delete(user)
    db.session.commit()
    user=User.query.filter(User.username == 'mavenlon').first()
    db.session.delete(user)
    db.session.commit()
    

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  • 原文地址:https://www.cnblogs.com/mavenlon/p/7839380.html
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