title: jQuery UI Sortable - serialize multiple columns
body: <p>I have a little script which allows me to use jQuery to sort div tags nicely between 3 columns.  The jQuery can be seen below:</p>
  
  <pre><code>$(".column").sortable(
   { connectWith: '.column' },
   { update: function(event, ui) { alert($(this).sortable('serialize')) }
  });
  </code></pre>
  
  <p>If I move an item from column 1 to column 2, it will display 2 alerts, showing the serialized data for the 2 affected columns.  The problem is, I need to know the column ids too, so I can eventually save the data into a database.  Right now, if it is possible to just display the column id in an alert but, that will be enough for me to continue.</p>