Clock4

index.yaml

indexes:

# AUTOGENERATED

# This index.yaml is automatically updated whenever the dev_appserver

# detects that a new type of query is run. If you want to manage the

# index.yaml file manually, remove the above marker line (the line

# saying "# AUTOGENERATED"). If you want to manage some indexes

# manually, move them above the marker line. The index.yaml file is

# automatically uploaded to the admin console when you next deploy

# your application using appcfg.py.

app.yaml

application: clock

version: 1

runtime: python

api_version: 1

handlers:

- url: /prefs

script: prefs.py

login: required

- url: /.*

script: main.py

main.py

from google.appengine.api import users

from google.appengine.ext import webapp

from google.appengine.ext.webapp.util import run_wsgi_app

import datetime

import models

class MainPage(webapp.RequestHandler):

def get(self):

time = datetime.datetime.now()

user = users.get_current_user()

if not user:

navbar = ('<p>Welcome! <a href="%s">Sign in or register</a> to customize.</p>'

% (users.create_login_url(self.request.path)))

tz_form = ''

else:

userprefs = models.get_userprefs()

navbar = ('<p>Welcome, %s! You can <a href="%s">sign out</a>.</p>'

% (user.nickname(), users.create_logout_url(self.request.path)))

tz_form = '''

Timezone offset from UTC (can be negative):

</label>

<input name="tz_offset" id="tz_offset" type="text"

size="4" value="%d" />

</form>

''' % userprefs.tz_offset

time += datetime.timedelta(0, 0, 0, 0, 0, userprefs.tz_offset)

self.response.headers['Content-Type'] = 'text/html'

self.response.out.write('''

<html>

<head>

</head>

<body>

%s

%s

</body>

</html>

''' % (navbar, str(time), tz_form))

application = webapp.WSGIApplication([('/', MainPage)],

debug=True)

def main():

run_wsgi_app(application)

if __name__ == '__main__':

main()

models.py

from google.appengine.api import users

from google.appengine.ext import db

class UserPrefs(db.Model):

tz_offset = db.IntegerProperty(default=0)

user = db.UserProperty(auto_current_user_add=True)

def get_userprefs(user_id=None):

if not user_id:

user = users.get_current_user()

if not user:

return None

user_id = user.user_id()

key = db.Key.from_path('UserPrefs', user_id)

userprefs = db.get(key)

if not userprefs:

userprefs = UserPrefs(key_name=user_id)

return userprefs

prefs.py

from google.appengine.ext import webapp

from google.appengine.ext.webapp.util import run_wsgi_app

import models

class PrefsPage(webapp.RequestHandler):

def post(self):

userprefs = models.get_userprefs()

try:

tz_offset = int(self.request.get('tz_offset'))

userprefs.tz_offset = tz_offset

userprefs.put()

except ValueError:

# User entered a value that wasn't an integer. Ignore for now.

pass

self.redirect('/')

application = webapp.WSGIApplication([('/prefs', PrefsPage)],

debug=True)

def main():

run_wsgi_app(application)

if __name__ == '__main__':

main()