title: How do I save a current date/time for a DATETIME column in rails 3?
body: <p>I have a DATETIME column called last_profile_update. I need to update it with a current time. I have the following code:</p>
  
  <pre><code>user = User.new
  user.last_profile_update = Date.today
  user.save
  </code></pre>
  
  <p>but it does not work.</p>