db_update not working as expected

Question

I am trying to develop a custom module; so far it works as it should. The only problem is I can't seem to get the MAC address to remain unchanged on update. It keeps getting the device ID number instead of the MAC field. How do I avoid the MAC address is changed?

function device_delete_request($uid = null, $macaddress, $device_id = null) {
  db_update('argon_user_stuff')
    ->fields(array(
      'id' => $device_id,
      'uid' => $uid,                 
      'macaddress' => $macaddress,
      'deletedmacaddress' => $macaddress,
      'updated' => REQUEST_TIME,
      'deleted' => REQUEST_TIME,
      'active' => 0
    ))
    ->condition('uid', $uid, '=')
    ->condition('id', $device_id, '=')
    ->execute();


    // Set the message and return to the user's profile page
    drupal_set_message('Device deleted');
    return drupal_goto("user/{$uid}/devices");

}

Answer 1

Is that mac address is a required field? It may be possible mac address passing to this function not getting change, you may need to debug mac address before the function call.