--- a/app/soc/views/helper/responses.py	Tue Jan 20 22:21:32 2009 +0000
+++ b/app/soc/views/helper/responses.py	Tue Jan 20 22:30:21 2009 +0000
@@ -33,6 +33,7 @@
 from soc.logic import system
 from soc.logic.models import site
 from soc.views import helper
+from soc.views.helper import redirects
 from soc.views.helper import templates
 from soc.views.sitemap import sidebar
 
@@ -116,7 +117,9 @@
   
   if settings:
     context['ga_tracking_num'] = settings.ga_tracking_num
-  
+ 
+  context['tos_link'] = getToSLink(settings)
+ 
   return context
 
 
@@ -168,4 +171,21 @@
     context['message'] = error.message_fmt % context
 
   return respond(request, sibling_templates, context=context,
-                 response_args=error.response_args)
\ No newline at end of file
+                 response_args=error.response_args)
+
+def getToSLink(presence):
+  """Returns link to 'show' the ToS Document if it exists, None otherwise.
+
+  Args:
+    presence: Presence entity that may or may not have a tos property
+  """
+  if not presence:
+    return None
+
+  try:
+    tos_doc = presence.tos
+  except db.Error:
+    return None
+
+  return redirects.getPublicRedirect(tos_doc, {'url_name': 'document'})
+