public function getDeviceList(Request $request) { $model = $request->model; $company_id = $request->company_id; $hasvehicle = $request->hasvehicle; $devicesquery = Device::hasvehicle($hasvehicle); if ($company_id != '') { $devicesquery = $devicesquery->where('company_id', $company_id); } if ($model != '') { $devicesquery = $devicesquery->where('model', $model); } $result = $devicesquery->lists("serial", "id")->all(); return json_encode($result); }