Persumi - Level up your writing and blogging with AI Fred Wu ifredwu@gmail.com http://persumi.com/u/fredwu http://persumi.com/u/fredwu/tech/e/blog/t/timestamps 2026-05-01T20:22:33.223902Z <![CDATA[<p> It has been <a href="http://datamapper.lighthouseapp.com/projects/20609/tickets/1245-inconsistent-timestamps-behaviour-when-hard-setting-the-aton-values">confirmed</a> by <a href="http://datamapper.org/">DataMapper</a>’s core developer <a href="http://github.com/snusnu">Martin Gamsjaeger (snusnu)</a> that it is a bug.</p> <p> In short, <code class="inline">created_[at|on]</code> can be manually overridden, but <code class="inline">updated_[at|on]</code> cannot.</p> <p> The workaround is simple, do it in two steps, for example:</p> <pre><code class="ruby language-ruby">job = Job.create( title: "Web Developer", created_at: Time.now - 2 ) job.update!(updated_at: Time.now - 1)</code></pre> <p> Please check the <a href="http://datamapper.lighthouseapp.com/projects/20609/tickets/1245-inconsistent-timestamps-behaviour-when-hard-setting-the-aton-values">bug ticket</a> to see when it’s getting fixed.</p> ]]> 2010-04-19T08:22:00.000000Z Fred Wu ifredwu@gmail.com http://persumi.com/u/fredwu http://persumi.com/u/fredwu/tech/e/blog/p/rails-tip-datamapper-timestamps-bug-and-workaround 2010-04-19T08:22:00.000000Z