protected function saveImage($model)
    {
        //$subdir = News::getImageSubdir($model->id);
        $subdir = $this->module->model('News')->getImageSubdir($model->id);
        FileHelper::createDirectory($this->uploadsNewsDir . '/' . $subdir);

        //$baseMainImageName = $model->imagefile->baseName; // don't use original file name
        $baseMainImageName = $model->id . '-' . $this->baseMainImageName; // image name should be standard
        $path = $subdir . '/' . $baseMainImageName . '.' . $model->imagefile->extension;
        $newImagePath = $this->uploadsNewsDir . '/' . $path;
        $oldImagePath = $this->uploadsNewsDir . '/' . $model->image;

        if ($newImagePath !== $oldImagePath && is_file($newImagePath)) { // names collision
            //! do not overwrite: it can be file uploaded by image manager
            //$model->addError('imagefile', 'Such image already exists: ' . $newImagePath); return false; //error can't solve problem
            rename($newImagePath, $newImagePath . '-' . uniqid()); // rename exists old file with 'new' name for save
        }

        if (is_file($oldImagePath)) {
            @unlink($oldImagePath); // always delete old main news image - need when change file extension
        }

        try {
            $model->imagefile->saveAs($newImagePath);
        } catch(ErrorException $e) {
            $model->addError('imagefile', $error = $e->getMessage());
            $path = false;
        }
        return $path;
    }