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, 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=True, autoincrement=True) username = db.Column(db.String(20), nullable=False) password = db.Column(db.String(20), nullable=False) db.create_all() user = User(username='1233', password='4566') db.session.add(user) db.session.commit() user = User.query.filter(User.username == '1233').first db.session.commit() user = User.query.filter(User.username == '1233').first() db.session.delete(user) db.session.commit() @app.route('/') def index(): return render_template("l") if __name__ == '__main__': app.run(debug=True)