webapp snippets

gistfile1.py

from tornado import web
from tornado import ioloop

from sqlalchemy.engine

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker

import os

os.getenv('NAME')

import user_handlers

class APIHandlerBase(web.RequestHandler):

    def initialize(self):
        '''setup here'''
        engine = create_engine(os.getenv('CONNECT_STRING'))
        self.session = sessionmaker(bind=engine)()

    def finalize(self):
        '''cleanup here'''
        pass

    def get_current_user(self):
        # check cookies, then grab user object from db
        return user

class UserHandler(web.RequestHandler):

    @web.authenticated
    @security.authorized('admin', 'user')
    def get(self, user_id):
        user = self.session.get(user_id)
        self.redirect(self.reverse_url('user', user_id))
        self.write({'username': user.username,
                    'user_id': user.id,
                    })
        format_json(user)
        self.application

class AccessGuardApp(tornado.web.Application):
    def __init__(self, debug=False):
        handlers = [
            web.url(r'/', 'MainHandler', name='main'),
            web.url(r'/users/(\d)', user_handlers.UserHandler, name='user'),
            ]
        settings = {'debug': debug}
        web.Application.__init__(self, handlers, **settings)


if __name__ == "__main__":
    application = AccessGuardApp(debug=True)
    application.listen(8888)
    ioloop.IOLoop.instance().start()