Display ID within QR Code (laravel)

I'm trying to get the current survey id to show within my QR code, however it's only displaying $survey->id. I'm sure this is something simple I'm missing (first laravel project). Any help would be appreciated.

Reference simple software QR

View

      <img src="data:image/png;base64, {!! base64_encode(QrCode::format('png')->size(200)->generate('localhost:8000/survey/view/$survey->id')) !!} ">

Thanks

via Chebli Mohamed