public function actionGridButton()
{
$searchModel = new CountriesSearch();
$dataProvider = $searchModel->search(Yii::$app->request->queryParams);
return $this->render('change_grid_botton', ['searchModel' => $searchModel, 'dataProvider' => $dataProvider]);
}
/**
* Lists all Countries models.
* @return mixed
*/
public function actionIndex()
{
$searchModel = new CountriesSearch();
$dataProvider = $searchModel->search(Yii::$app->request->queryParams);
return $this->render('index', ['searchModel' => $searchModel, 'dataProvider' => $dataProvider]);
}