Getting Started with Google Apps
Revision as of 17:35, 9 May 2011 by PeterHarding (talk | contribs)
Links
- http://googleappengine.blogspot.com/
- Prospective Search API
- Testbed
- http://code.google.com/appengine/docs/python/tools/uploadinganapp.html
- http://code.google.com/appengine/docs/whatisgoogleappengine.html
- Getting Started - Python
YAML
builtins: - datastore_admin: on
Hello World
helloworld.py
#-------------------------------------------------------------------------------
import os
import cgi
import sys
from google.appengine.api import users
from google.appengine.ext import webapp
from google.appengine.ext import db
from google.appengine.ext.webapp import template
from google.appengine.ext.webapp.util import run_wsgi_app
#-------------------------------------------------------------------------------
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):
greetings_query = Greeting.all().order('-date')
greetings = greetings_query.fetch(10)
if users.get_current_user():
url = users.create_logout_url(self.request.uri)
url_linktext = 'Logout'
else:
url = users.create_login_url(self.request.uri)
url_linktext = 'Login'
template_values = {
'greetings': greetings,
'url': url,
'url_linktext': url_linktext,
}
sys.stderr.write("[%s]\n" % template_values)
path = os.path.join(os.path.dirname(__file__), 'html', 'index.html')
sys.stderr.write("[%s]\n" % path)
self.response.out.write(template.render(path, template_values))
#-------------------------------------------------------------------------------
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():
run_wsgi_app(application)
#-------------------------------------------------------------------------------
if __name__ == "__main__":
main()
#-------------------------------------------------------------------------------
app.yaml
application: helloworld version: 1 runtime: python api_version: 1 handlers: - url: /css static_dir: css - url: /.* script: helloworld.py
index.html
<html>
<head>
<link type="text/css" rel="stylesheet" href="/css/main.css" />
</head>
<body>
<div class="one">
<div class="two">
{% for greeting in greetings %}
{% if greeting.author %}
<b>{{ greeting.author.nickname }}</b> wrote:
{% else %}
An anonymous person wrote:
{% endif %}
<blockquote>{{ greeting.content|escape }}</blockquote>
{% endfor %}
<form action="/sign" method="post">
<div><textarea name="content" rows="3" cols="60"></textarea></div>
<div><input type="submit" value="Sign Guestbook"></div>
</form>
</div>
<div class="three">
<a href="{{ url }}">{{ url_linktext }}</a>
</div>
</div>
</body>
</html>
main.css
body {
font-family: Verdana, Helvetica, sans-serif;
background-color: #DDDDDD;
}
.one {
background-color: #BBBBBB;
}
.two {
background-color: #CCCCCC;
}
.three {
background-color: #AAAAAA;
}