simple_collection.py

import json
import logging
from google.appengine.ext import db
from google.appengine.api import users
import webapp2

# With routes like:
#app = webapp2.WSGIApplication([
#    webapp2.Route("/d/<collection>", DataHandler, methods=["GET", "POST"]),
#    webapp2.Route("/d/<collection>/<id>", DataHandler, methods=["GET", "PUT", "DELETE"]),
#
# This handler implements the simplest possible backbone handler for whatever data you like.

class Collection(db.Expando):
  name = db.StringProperty()

class DataHandler(webapp2.RequestHandler):
  def get(self, collection, id=None):
    if id:
      c = Collection.get_by_id(int(id))
      if c:
        d = json.loads(c.data)
        d["id"] = c.key().id()
        self.response.out.write(json.dumps(d))
    else:
      c = Collection.all()
      self.response.out.write("[")
      for rec in c.run():
        d = json.loads(rec.data)
        d["id"] = rec.key().id()
        self.response.out.write(json.dumps(d) + ",")
      self.response.out.write("]")

  def post(self, collection):
    data = json.loads(self.request.body)
    c = Collection(name = collection,
                   data = self.request.body)
    c.put()
    data["id"] = c.key().id()
    self.response.out.write(json.dumps(data))

  def put(self, collection, id):
    c = Collection.get_by_id(int(id))
    if c:
      data = json.loads(self.request.body)
      if data:
        c.data = self.request.body
        c.put()
        self.response.out.write(json.dumps(data))

  def delete(self, collection, id):
    c = Collection.get_by_id(int(id))
    if c:
      c.delete()