adding channel cloud on front page [#2 state:resolved]

index.html

@@ -15,9 +15,7 @@ <h1>Onelinr <span>by <a href="http://eric.wahlforss.com/2007/04/06/onelinr/">Eri
   </script>
   <h2>Active Onelinr Channels</h2>
   <ul id="channel-cloud">
-    {% for ch in channels %}
-      <li class=""><a href="/{{ch.name}}">{{ch.name}}</a></li>
-    {% endfor %}
+    {{channelCloud}}
   </ul>
   <div id="changelog">
     <h3>Changelog</h3>

index.yaml

@@ -28,7 +28,7 @@ indexes:
   - name: post_id
     direction: desc
 
-# Used 6 times in query history.
+# Used 25 times in query history.
 - kind: Channel
   properties:
   - name: post_count

onelinr.py

@@ -36,7 +36,8 @@ class StartPage(webapp.RequestHandler):
   def get(self):
     channels = Channel.all()
     channels.order("-post_count")
-    self.response.out.write(template.render('index.html', {'channels':channels}))
+    channelCloud = renderChannelCloud(channels);
+    self.response.out.write(template.render('index.html', {'channels':channels,'channelCloud':channelCloud}))
 
 class ChannelPage(webapp.RequestHandler):
 
@@ -141,6 +142,25 @@ def main():
 
   run_wsgi_app(application)
 
+# display channel tag cloud
+def renderChannelCloud(channels):
+  max, min = 0, 0
+  classes = ["size1","size2","size3","size4","size5"]
+
+  for c in channels:
+    if c.post_count > max:
+      max = c.post_count
+    if c.post_count < min:
+      min = c.post_count
+
+  divisor = ((max - min) / len(classes)) + 1
+
+  channelList = ""
+  for c in channels:
+    channelList += "<li class='" + classes[(c.post_count - min) / divisor] + "'><a href='/" + c.name + "'>" + c.name + "</a></li>"
+
+  return channelList
+
 
 def url_to_channel_name(url):
   url_array = url.split("/")