Several of Joomla!'s core components allow you to order records in a list by clicking on arrows in the Ordering column. We can accomplish the same by using Joomla!'s JPagination class, and the move() member function of JTable. Before doing this, we should start displaying the records in the correct order. Make the highlighted adjustment to the query in the /administrator/components/com_critic/views/critics/view.html.php file:

$db =& JFactory::getDBO();
$db->setQuery('SELECT * FROM #__critic ORDER BY ordering');

$rows = $db->loadObjectList();

Save the file, and then reload /administrator/index.php?option=com_critic in the browser. Your screen should now have the records sorted by the Ordering column and should look similar to the following:

Next, we need to bring in the JPagination class that will help us generate the up and down arrows on the list screen. Again, in the views/critics/view.html.php file, add the following highlighted code:

$rows = $db->loadObjectList...