Added link to Luke Plant's current-user hack from docs/faq.txt

git-svn-id: http://code.djangoproject.com/svn/django/trunk@3435 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/faq.txt

@@ -546,10 +546,15 @@ Set the ``CACHE_MIDDLEWARE_ANONYMOUS_ONLY`` setting to ``True``. See the
 How do I automatically set a field's value to the user who last edited the object in the admin?
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-At this point, you can't do this. But it's an oft-requested feature, so we're
+At this point, Django doesn't have an official way to do this. But it's an oft-requested
-discussing how it can be implemented. The problem is we don't want to couple
+feature, so we're discussing how it can be implemented. The problem is we don't want to couple
-the model layer with the admin layer with the request layer (to get the current
+the model layer with the admin layer with the request layer (to get the current user). It's a
-user). It's a tricky problem.
+tricky problem.
+
+One person hacked up a `solution that doesn't require patching Django`_, but note that it's an
+unofficial solution, and there's no guarantee it won't break at some point.
+
+.. _solution that doesn't require patching Django: http://lukeplant.me.uk/blog.php?id=1107301634
 
 How do I limit admin access so that objects can only be edited by the users who created them?
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