public function actionSaveImg()
{
    Yii::$app->response->format = Response::FORMAT_JSON;
    $this->enableCsrfValidation = false;

    $dir = Yii::getAlias('@images').'/product';
    if(!file_exists($dir)){
        FileHelper::createDirectory($dir);
    }
    $result_link = str_replace('admin.','',Url::home(true)).'uploads/images/'.'';
    $file = UploadedFile::getInstanceByName('ImagesManager[attachment]');

    $model = new ImagesManager();
$model->name = strtotime('now').'_'.Yii::$app->getSecurity()->generateRandomString(6) .'.'.$file->extension;
    if ($model->load(Yii::$app->request->post()) && $model->validate()) {


        if($file->saveAs($dir . $model->name)){
          /*  $imag = Yii::$app->image->load($dir . $model->name);
            $imag->resize(800, null, Yii\image\drivers\Image::PRECISE)->save($dir . $model->name,85);*/
            $result = [
                'filelink' => $result_link . $model->name,
                'filename' => $model->name
            ];

            $model->save();
        } else {
            $result = [
                'error' => 'Ошибка загрузки'
            ];
        }

        return $result;
    }

    return [
        'error' => $model->errors(),
    ];
}