* #upload_referer_url no longer exists, just using #ref works. * #upload_source defaults to params[:url], so using it instead of #url still works. ref: https://github.com/r888888888/danbooru/issues/3850#issuecomment-417116385
* #upload_referer_url no longer exists, just using #ref works. * #upload_source defaults to params[:url], so using it instead of #url still works. ref: https://github.com/r888888888/danbooru/issues/3850#issuecomment-417116385