How to write your own created_at/updated_at?

I'm using Pfeed(GitHub - parolkar/pfeed: A rails plugin that allows you to create extensible log of activity) plugin for User Activity Feeds. It creates PfeedItem model records and uses created_at field for a lot of stuff inside.

Now I need to export/import those user logs. I do exporting to YAML. When I reconstruct PfeedItem AR object from YAML, it have real(old) creation time in created_at attribute. When I save this PfeedItem - there is new created_at with current time written to database.

How do I force created_at to be not automatically generated, but contain my old created_at timestamp from YAML?

Active Record shouldn't overwrite created_at if you set it yourself

Fred