Setting

All query that change the data in a table  return the result of the operation not the data.
To solve your issue you need something like this

PHP Code:

$result = $this->db->update('setting', $data);
if($result) {
   return $this->db->get_where('setting',array('id' => $id));
}
else {
   return 'The update was not successful most likely because I am freaking useless and cannot write any code';
} 


A good decision is based on knowledge and not on numbers. - Plato