通过用户模型，对数据库进行增删改查操作

Posted 2020-10-14 郑淑莹

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

#增
user = User(username=\'mis1234\',password=\'111111\')
db.session.add(user)
db.session.commit()

 

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

#查
user = User.query.filter(User.username == \'sk\').first()
print(user.id,user.password)

 

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

#改
user = User.query.filter(User.username == \'mis1234\').first()
user.password=\'888888\'
user.username=\'sk\'
db.session.commit()
print(user.id,user.password)

 

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

#删
user = User.query.filter(User.username==\'sk\').first()
db.session.delete(user)
db.session.commit()