public function detach()
{
$location = Location::find(Request::input('location'));
$color = Color::find(Request::input('color'));
foreach (Gauge::all() as $gauge) {
$locationColorGauge = LocationColorGauge::where('location_id', '=', $location->id)->where('color_id', '=', $color->id)->where('gauge_id', '=', $gauge->id);
if ($locationColorGauge->first()) {
$locationColorGauge->first()->delete();
}
}
return "success";
}