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()
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 from flask_sqlalchemy import SQLAlchemy import config app = Flask(__name__) app.config.from_object(config) db = SQLAlchemy(app) # db.create_all() 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(20), nullable=False) #修改 user = User.query.filter(User.username == 'xiaoliang').first() user.password='1111' print(user.username,user.password) db.session.commit() #删除 user = User.query.filter(User.username == 'xiaoliang').first() print(user.username,user.password) db.session.delete(user) db.session.commit() #添加 user=User(username='xiaoliang',password='1111') db.session.add(user) db.session.commit() ''' db.create_all() user=User.query.filter(User.username=='chen1115').first() user.password='11111' db.session.commit() ''' @app.route('/') def hello_world(): return 'Hello World!' if __name__ == '__main__': app.run()