flask操作mongo两种方式--常规

#manage.py
#coding=utf-8
#Flask-Script是一个可以在flask应用外部编写脚本的扩展
#常用功能：
#运行一个开发的服务器
#python shell中操作数据库看
#命令行任务
#from flask_script import Manager
#执行语句 python manage.py save

from flask_script import Manager
from app import app, db
from models import Users

manager = Manager(app)

@manager.command
def hello():
    print "hello world"

@manager.command
def save():
    user = Users("dadao", "dadao@123.com")
    user.save()

@manager.command
def query_users():
    users = Users.query_users()
    for u in users:
        print u

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

#models.py
#coding=-utf-8

import pymongo

def get_conn():
    client = pymongo.MongoClient("127.0.0.1", 27017)
    db = client.users
    users = db.users
    return users

class Users(object):

    def __init__(self, name, email):
        self.name = name
        self.email = email

    def save(self):
        user = {"name": self.name, "email":self.email}
        conn = get_conn()
        id = conn.insert(user)
        print id

    @staticmethod
    def query_users():
        conn = get_conn()
        users = conn.find()
        return users

#app.py
#coding=utf-8

from flask import Flask

app = Flask(__name__)

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

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