guestbook_namespaces/guestbook.py

   1 import cgi
   2 import datetime
   3 import wsgiref.handlers
   4
   5 from google.appengine.ext import db
   6 from google.appengine.api import users
   7 from google.appengine.ext import webapp
   8 from google.appengine.ext.webapp.util import run_wsgi_app
   9
  10 class Greeting(db.Model):
  11   author = db.UserProperty()
  12   content = db.StringProperty(multiline=True)
  13   date = db.DateTimeProperty(auto_now_add=True)
  14
  15
  16 class MainPage(webapp.RequestHandler):
  17   def get(self):
  18     self.response.out.write('<html><body>')
  19
  20     greetings = db.GqlQuery("SELECT * "
  21                             "FROM Greeting "
  22                             "ORDER BY date DESC LIMIT 10")
  23
  24     for greeting in greetings:
  25       if greeting.author:
  26         self.response.out.write('<b>%s</b> wrote:' % greeting.author.nickname())
  27       else:
  28         self.response.out.write('An anonymous person wrote:')
  29       self.response.out.write('<blockquote>%s</blockquote>' %
  30                               cgi.escape(greeting.content))
  31
  32     # Write the submission form and the footer of the page
  33     self.response.out.write("""
  34           <form action="/sign" method="post">
  35             <div><textarea name="content" rows="3" cols="60"></textarea></div>
  36             <div><input type="submit" value="Sign Guestbook"></div>
  37           </form>
  38         </body>
  39       </html>""")
  40
  41
  42 class Guestbook(webapp.RequestHandler):
  43   def post(self):
  44     greeting = Greeting()
  45
  46     if users.get_current_user():
  47       greeting.author = users.get_current_user()
  48
  49     greeting.content = self.request.get('content')
  50     greeting.put()
  51     self.redirect('/')
  52
  53
  54 application = webapp.WSGIApplication([
  55   ('/', MainPage),
  56   ('/sign', Guestbook)
  57 ], debug=True)
  58
  59
  60 def main():
  61   run_wsgi_app(application)
  62
  63
  64 if __name__ == '__main__':
  65   main()