[Assorted-commits] SF.net SVN: assorted:[1424] pitch-in

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Revision: 1424
          http://assorted.svn.sourceforge.net/assorted/?rev=1424&view=rev
Author:   yangzhang
Date:     2009-05-19 00:09:28 +0000 (Tue, 19 May 2009)

Log Message:
-----------
added pitch-in

Added Paths:
-----------
    pitch-in/
    pitch-in/trunk/
    pitch-in/trunk/src/
    pitch-in/trunk/src/helloworld/
    pitch-in/trunk/src/helloworld/app.yaml
    pitch-in/trunk/src/helloworld/pitchin.py

Added: pitch-in/trunk/src/helloworld/app.yaml
===================================================================

--- pitch-in/trunk/src/helloworld/app.yaml	                        (rev 0)
+++ pitch-in/trunk/src/helloworld/app.yaml	2009-05-19 00:09:28 UTC (rev 1424)
@@ -0,0 +1,8 @@
+application: pitch-in
+version: 1
+runtime: python
+api_version: 1
+
+handlers:
+- url: /.*
+  script: pitchin.py

Added: pitch-in/trunk/src/helloworld/pitchin.py
===================================================================
--- pitch-in/trunk/src/helloworld/pitchin.py	                        (rev 0)
+++ pitch-in/trunk/src/helloworld/pitchin.py	2009-05-19 00:09:28 UTC (rev 1424)
@@ -0,0 +1,138 @@
+import cgi
+
+# TODO: add anonymization feature
+
+from google.appengine.api import users
+from google.appengine.ext import webapp
+from google.appengine.ext.webapp.util import run_wsgi_app
+from google.appengine.ext import db
+import cPickle, logging
+
+def getContribs(pool): return cPickle.loads(str(pool.contribs))
+def serContribs(contribs): return cPickle.dumps(contribs, 2)
+def showContribs(pool):
+  contribs = getContribs(pool)
+  if len(contribs) == 0:
+    return '<p>(no participants yet)</p>'
+  else:
+    s = '<ul>'
+    for name, amount in contribs.iteritems():
+      s += '<li>%s: $%d.00</li>' % (cgi.escape(name), amount)
+    s += '<li>TOTAL: $%d.00</li></ul>' % (sum(contribs.itervalues()),)
+    return s
+
+class invalid_submit(Exception): pass
+def validate(pred, msg):
+  if not pred: raise invalid_submit(msg)
+
+class Pool(db.Model):
+  descrip = db.StringProperty()
+  contribs = db.BlobProperty()
+
+def mainPage(page, error = ''):
+  page.response.out.write(r"""
+    <html>
+      <body>
+        <p style="color: red">%(error)s</p>
+        <p>
+          To create a pool, just enter a description of what it's
+          for here, and you will be provided a URL that you can
+          distribute to the people you want to participate in the
+          pool.
+        </p>
+        <form action="/create" method="post">
+          <div><input type="text" name="descrip"/></div>
+          <div><input type="submit" width="50" value="Create Pool"></div>
+        </form>
+        <p>Examples:</p>
+        <ul>
+          <li>Birthday gift for Amy (aiming for $180 Rock Band set)</li>
+          <li>Holiday vacation trip</li>
+        </ul>
+      </body>
+    </html>""" % {'error': error})
+
+class MainPage(webapp.RequestHandler):
+  def get(self):
+    mainPage(self)
+
+class CreatePage(webapp.RequestHandler):
+  def post(self):
+    if self.request.get('descrip').strip() == '':
+      mainPage(self, 'Must specify a description')
+    else:
+      pool = Pool()
+      pool.descrip = self.request.get('descrip')
+      pool.contribs = cPickle.dumps({})
+      pool.put()
+      self.response.out.write(r"""
+        <html>
+          <body>
+            <p>
+              Congrats!  You've successfully created a new money pool.
+              Send this URL out to anyone you're inviting to
+              participate:
+            </p>
+            <p>
+              <a
+              href="/pool?key=%(key)s">http://pitch-in.appspot.com/pool?key=%(key)s</a>
+            </p>
+          </body>
+        </html>""" % {'key': pool.key()})
+
+class PoolPage(webapp.RequestHandler):
+  def getPool(self):
+    return db.get(db.Key(self.request.get('key')))
+  def get(self, error = ''):
+    pool = self.getPool()
+    self.response.out.write(r"""
+      <html>
+        <body>
+          <p style="color: red">%(error)s</p>
+          <p>Description of pool: %(descrip)s</p>
+          %(contribs)s
+          <p>
+            To add or update your own contribution to the pool, enter
+            the following information:
+          </p>
+          <form action="/pool" method="post">
+            <input type="hidden" name="key" value="%(key)s"/>
+            <div>
+              <label name="name">Name:</label>
+              <input type="text" name="name"/>
+            </div>
+            <div>
+              <label name="amount">Amount:</label>
+              $<input type="text" name="amount"/>.00
+            </div>
+            <div><input type="submit" value="Enter the pool!"/></div>
+          </form>
+        </body>
+      </html>
+    """ % {'error': error,
+           'descrip': cgi.escape(pool.descrip),
+           'contribs': showContribs(pool),
+           'key': cgi.escape(self.request.get('key'))})
+  def post(self):
+    try:
+      validate(self.request.get('name').strip() != '',
+               'You must enter a name.')
+      try: amount = int(self.request.get('amount'))
+      except ValueError: raise invalid_submit('You must enter an integer dollar amount.')
+    except invalid_submit, ex:
+      self.get(ex)
+    else:
+      pool = self.getPool()
+      contribs = getContribs(pool)
+      contribs[self.request.get('name')] = amount
+      pool.contribs = cPickle.dumps(contribs)
+      pool.put()
+      self.redirect('/pool?key=%s' % pool.key())
+
+application = webapp.WSGIApplication([('/', MainPage),
+                                      ('/create', CreatePage),
+                                      ('/pool', PoolPage)],
+                                     debug = True)
+
+def main(): run_wsgi_app(application)
+if __name__ == "__main__": main()


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