Laravel 5 helper function asset different domains

In Laravel 5.0, I am using the helper function asset to show where different assets are ( css, js images etc. ). I am building a platform that shows different information depending on the url which means I cannot bind the asset to a url. I know in config/app.php it has 'url' => 'http://localhost' but I cannot change that because the url will not always be the same. Is there a way to set this up to handle the domain changing within the same application?

via Chebli Mohamed