No data in the response body - php

Question

I'm trying to return some JSON data from my controller. I actually got it working with.
response()->json(['success'=>true])->send();
but that is not the way it's done in the documentation. I tried
return \Response::json(['success' => true]);
and the status code was 200 but no data in the body. I guess it's okay but I just really want to know what the problem is. There were nothing in the log so there does not seem to be an error. If it's any help, I'm using Laravel 5.5.40 and a dependency called tymon/jwt-auth which applies some middleware for auth and refresh.
Should probably add that I have tried to simply return an array and string but the result stays the same.
CONTROLLER
Notice the commented section in createGame
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Models\Game;
use Illuminate\Http\Response;
class GameController extends Controller
{
public function getPostPatchDelete(Request $req){
switch($req->method()){
case 'GET':
$this->getGame($req);
case 'POST':
$this->createGame($req);
case 'PATCH':
$this->updateGame($req);
case 'DELETE':
$this->deleteGame($req);
}
}
private function getGame($req){
}
private function createGame($req){
//Response::json(['success' => 'hi, atiq']);
//return response()->json(['lel'=>'lol'], 200);
response()->json(['success'=>true])->send();
}
private function updateGame($req){
}
private function deleteGame($req){
}
}

Answer 1

You have to use return in getPostPatchDelete() AND createGame():
public function getPostPatchDelete(Request $req){
switch($req->method()){
case 'POST':
return $this->createGame($req);
}
}
private function createGame($req){
return response()->json(['success'=>true]);
}

Answer 2

The way I always do it is like this:
return response()->json(['message' => 'Some message.'], 200);
Note: the second argument of the json() function is the status code.
Of course is always nice to use descriptive constants instead of numbers -in this case to set the HTTP response code- so:
use Illuminate\Http\Response;
class CoolController extends Controller {
public function coolFunction() {
// your logic
return response()->json(['message' => 'A message.'], Response::HTTP_OK);
}
}