server.py

import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web

import pymongo
from bson.objectid import ObjectId
from tornado_cors import CorsMixin
from tornado.options import define, options
import json
define("port", default=8000, help="run on the given port", type=int)

class Application(tornado.web.Application):
	def __init__(self):
		handlers = [(r"/todos", Todos)]
		conn = pymongo.Connection("localhost")
		self.db = conn["todos"]
		settings = dict(
		xsrf_cookies=False,
		debug=True
		)
		tornado.web.Application.__init__(self, handlers, **settings)

class Todos(CorsMixin, tornado.web.RequestHandler):
	CORS_ORIGIN = '*'
	CORS_METHODS = 'POST,GET,OPTIONS'
	CORS_HEADERS = 'Origin, X-Requested-With, Content-Type, Accept,
	content-type'
	CORS_MAX_AGE = 1728000
	CORS_CREDENTIALS = False
	def get(self):
		Todos = self.application.db.todos
		todo_id = self.get_argument("id", None)
		if todo_id:
			todo = Todos.find_one({"_id": ObjectId(todo_id)})
			todo["_id"] = str(todo['_id'])
			self.write(todo)
		else:
			todos = Todos.find()
			result = []
			data = {}
			for todo in todos:
				todo["_id"] = str(todo['_id'])
				result.append(todo)
			data['todos'] = result
			self.write(data)
	def options(self):
		todo_id = self.get_argument("id", None)
		Todos = self.application.db.todos
		#if self.request['Access-Control-Request-Method'] == 'POST':
		self.set_header("Access-Control-Allow-Headers", "content-type")
	def post(self):
		data = json.loads(self.request.body)
		Todos = self.application.db.todos
		todo_id = self.get_argument("id", None)
		if todo_id:
			# perform an edit
			todo = Todos.find_one({"_id": ObjectId(todo_id)})
			# here should perform the update…
			todo['text'] = data['text']
			todo['details'] = data['details']
			todo['done'] = data['done']
			Todos.save(todo)
			# cos _id is not JSON serializable.
			todo["_id"] = str(todo['_id'])
			self.write(todo)
		else:
			data = json.loads(self.request.body)
			todo = {
			'text': data['text'],
			'details': data['details'],
			'done': data['done']
			}
			a = Todos.insert(todo)
			# cos _id is not JSON serializable.
			todo['_id'] = str(a)
			self.write(todo)
def main():
	tornado.options.parse_command_line()
	http_server = tornado.httpserver.HTTPServer(Application())
	http_server.listen(options.port)
	tornado.ioloop.IOLoop.instance().start()
if __name__ == "__main__":
	main()