/**
  * Overwrite: returns a single page variable record in an array format
  *
  * @access	public
  * @param	mixed The where condition for the query
  * @param	string The field name to order by (optional)
  * @return	array
  */
 public function find_one_array($where, $order_by = NULL)
 {
     $data = parent::find_one_array($where, $order_by);
     if (!empty($data)) {
         $data['value'] = $this->_process_casting($data);
     }
     return $data;
 }