thirdparty/google_appengine/demos/guestbook/guestbook.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Sun, 08 Mar 2009 00:00:13 +0000
changeset 1731 254375a57d62
parent 109 620f9b141567
permissions -rwxr-xr-x
Add json2.js to repository under json folder, update build script and app.yaml.template files. This is pretty useful set of functions for JSON manipulation in Javascript, we will mostly use stringify function. This code is on Public Domain license and comes from http://www.json.org/js.html. Patch by: Pawel Solyga Reviewed by: to-be-reviewed

#!/usr/bin/env python
#
# Copyright 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import cgi
import datetime
import wsgiref.handlers

from google.appengine.ext import db
from google.appengine.api import users
from google.appengine.ext import webapp

class Greeting(db.Model):
  author = db.UserProperty()
  content = db.StringProperty(multiline=True)
  date = db.DateTimeProperty(auto_now_add=True)


class MainPage(webapp.RequestHandler):
  def get(self):
    self.response.out.write('<html><body>')

    greetings = db.GqlQuery("SELECT * "
                            "FROM Greeting "
                            "ORDER BY date DESC LIMIT 10")

    for greeting in greetings:
      if greeting.author:
        self.response.out.write('<b>%s</b> wrote:' % greeting.author.nickname())
      else:
        self.response.out.write('An anonymous person wrote:')
      self.response.out.write('<blockquote>%s</blockquote>' %
                              cgi.escape(greeting.content))

    self.response.out.write("""
          <form action="/sign" method="post">
            <div><textarea name="content" rows="3" cols="60"></textarea></div>
            <div><input type="submit" value="Sign Guestbook"></div>
          </form>
        </body>
      </html>""")


class Guestbook(webapp.RequestHandler):
  def post(self):
    greeting = Greeting()

    if users.get_current_user():
      greeting.author = users.get_current_user()

    greeting.content = self.request.get('content')
    greeting.put()
    self.redirect('/')


application = webapp.WSGIApplication([
  ('/', MainPage),
  ('/sign', Guestbook)
], debug=True)


def main():
  wsgiref.handlers.CGIHandler().run(application)


if __name__ == '__main__':
  main()