public function actionCreate($product_id)
{
$model = new Thumbnail();
if ($model->load(Yii::$app->request->post()) && $model->save()) {
return $this->redirect(['list', 'product_id' => $model->product_id]);
} else {
return $this->render('create', ['model' => $model, 'product_id' => $product_id]);
}
}
