need help

[eluser]pankaj.sharma[/eluser]
hiiii
i am new to codeigniter
i have done fatch data form database ssuccefully
but how i delete row respective to id
plz help me

in core coading i am doing...
<a href = " selection.php?todo=&lt;?=$row['id'];">Delete</a>

and at the top of the program
if(isset($_REQUEST['todo']))
{
$id = $_REQUEST['todo'];
mysql_query("delete from formtable where id = '".$_GET['REQUEST']."' ");
header("locationelect.php");
}

but how it done in codeigniter
plz help me