Laravel在模型中使用public_path？

Question

I am trying to use the public_path helper to define some standard folders in my model, but i get the following error. Is it not possible to use helper functions in the models? In the controller everything works fine.

class Varaimage extends \Eloquent {

public $sizes = array(
                array('folder'=>'/large/', 'width'=>'1000'),
                array('folder'=>'/thumb/', 'width'=>'150')
);

public $folder         = public_path().'/images/varor/';

exception 'Symfony\Component\Debug\Exception\FatalErrorException' with message 'syntax error, unexpected '(', expecting ',' or ';'' in /var/www/html/kollavaran/app/models/Varaimage.php:13

Answer 1

because php doesn't allow it (because it is not implemented). however you can do this.

public $folder;

public function __construct()
{
    $this->folder = public_path().'/images/varor/';

}

not tested though.