1// in a single line here
2$values = Cart::where('session_id', $id)->update(['data'=>$data]);
1// If there's a flight from Oakland to San Diego, set the price to $99.
2// If no matching model exists, create one.
3$flight = App\Flight::updateOrCreate(
4 ['departure' => 'Oakland', 'destination' => 'San Diego'],
5 ['price' => 99]
6);