Admin::setListFields PHP Method

    public function setListFields($listFields)
    {
        $this->listFields = $listFields;
    }

 /**
  * Render the basic drug set admin page.
  */
 public function actionDrugSets()
 {
     $admin = new Admin(DrugSet::model(), $this);
     $admin->setListFields(array('id', 'name', 'subspecialty.name', 'active'));
     $admin->searchAll();
     $admin->getSearch()->setItemsPerPage($this->itemsPerPage);
     $admin->listModel();
 }