flask 操作mysql的两种方式-sqlalchemy操作

flask 操作mysql的两种方式-sqlalchemy操作

二、ORM sqlalchemy操作

#coding=utf-8
# model.py

from app import db

class User(db.Model):

    user_id = db.Column(db.Integer, primary_key=True)
    user_name = db.Column(db.String)

    def __init__(self, user_id, user_name):
        self.user_id = user_id
        self.user_name = user_name

    def __str__(self):
        return "id:{id}-name:{name}".format(id = self.user_id, name = self.user_name)

#coding=utf-8
# app.py

from flask import Flask
from flask.ext.sqlalchemy import SQLAlchemy

app = Flask(__name__)
app.config["SQLALCHEMY_DATABASE_URI"] = "mysql://root:root@123@localhost:3306/jikexueyuan"

db = SQLAlchemy(app)

@app.route("/")
def hello_world():
    return "hello world"

if __name__ == "__main__":
    app.run()

#coding=utf-8
# manage.py

from flask_script import Manager
from app import app, db
from model import User

manager = Manager(app)

@manager.command
def save():
    user = User(4, "curry")
    db.session.add(user)
    db.session.commit()

@manager.command
def query_all():
    users = User.query.all()
    for user in users:
        print user

if __name__ == "__main__":
    manager.run()

#表结构
CREATE DATABASE IF NOT EXISTS `jikexueyuan` DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

CREATE TABLE `jikexueyuan`.`user`(
        `user_id` INT NOT NULL,
        `user_name` VARCHAR(45) NULL,
        PRIMARY KEY (`user_id`))
ENGINE = INNODB;