how is convert this code to CodeIgniter code?

[eluser]SaSa[/eluser]
Thank you,
what is this error?

Code:

A PHP Error was encountered

Severity: Warning

Message: mysql_fetch_array() expects parameter 1 to be resource, object given

Filename: admin/model_tour.php

Line Number: 19

line 19:

Code:

while($row = mysql_fetch_array($query)) //this is line 19
        {
           $data[] = $row->name;
        }