Значение по умолчанию поле "Изображение"

 
new fieldImage('img', array(
                'title' => 'Изображение',
		'options' =>array('allow_import_link'=>true),
		'default' =>$item['thumbnails'], // http://i.ytimg.com/vi/B-By8KS4I7w/maxresdefault.jpg
       ))
 

public function addImg($image, $field){
    	$images_model = cmsCore::getModel('images');
        $uploader = new cmsUploader();
        $paths = array();
        foreach($field['options']['sizes'] as $sizes) {
            $preset = $images_model->getPresetByName($sizes);
            $paths[$sizes] = $uploader->resizeImage($image, array('width'=>$preset['width'], 'height'=>$preset['height'], 'is_square'=>$preset['is_square']));
        }
        return $paths;
    }

 
$upload = $this->cms_uploader->uploadFromLink($item['thumbnails'], 'bmp,jpg,jpeg,png,gif');

 
    public function uploadFromLink($post_filename, $allowed_ext = false, $allowed_size = 0, $destination = false) {
        $link = $file_name = trim($_POST[$post_filename]);
 

$_POST['thumbnails'] = $item['thumbnails'];
$upload = $this->cms_uploader->uploadFromLink('thumbnails', 'bmp,jpg,jpeg,png,gif');