Rails - Jan 2006 - Noob: format column in scaffold (i.e. - datetime)

This is my first RoR project so go easy. It''s a simple directory with 
contacts. I have two datetime columns in my database (created_at and 
updated_at). In the list view (changed very little from default 
generated by scaffold) I want them to display as time_ago_in_words or 
:long or :short (not sure yet). The default just takes up too much 
space. In the show view this is fine and even preferred. I can''t figure
out how to change this before I render the list view. Presumably this 
would be done in my directory controller, but I''m not sure and 
everything I''ve tried doesn''t work. Thanks in advance.

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