通过用户模型,对数据库进行增删改查操作
from flask import Flask from flask_sqlalchemy import SQLAlchemy import config app = Flask(__name__) app.config.from_object(config) db = SQLAlchemy(app) # 创建用户模型: 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) nickname = db.Column(db.String(20)) ''' user=User(username = 'mis15',password = 'mis15') db.session.add(user) 加 db.session.commit() # 提交上数据库 db.create_all()删除/ user = User.query.filter(User.username=='mis15').first() # 查找到 db.session.delete(user) # 删除 db.session.commit() ''' @app.route('/') def hello_word(): return 'Hello World' if __name__=='__main__': app.run()
增 改 删
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()