Can't edit secrets within 3 days

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Make new secret
2. Go to Full List
3. Try and edit the newly added secret within 3 days

What is the expected output? What do you see instead?
Expected: Edit form
Instead: Ruby Error page

Please provide any additional information below.

created_at method doesn't exist on lines 20 and 22 of this file:
app/views/preferences/edit.rhtml

Original issue reported on code.google.com by [email protected] on 1 Apr 2008 at 10:40