public function actions()
{
$actions = parent::actions();
$actions['index']['prepareDataProvider'] = function () {
// Get id param
$request = \Yii::$app->getRequest();
$id = $request->get('id');
$query = FormRule::find()->where('form_id=:form_id', [':form_id' => $id]);
return new ActiveDataProvider(['query' => $query]);
};
return $actions;
}