api using json response

IES-Bandung/app/Http/Controllers/ObjectTypeController.php

@@ -3,6 +3,7 @@
 namespace App\Http\Controllers;
 
 use Illuminate\Http\Request;
+use Illuminate\Http\Response;
 
 use App\Http\Requests;
 use App\Model\ObjectType;
@@ -15,6 +16,6 @@ class ObjectTypeController extends Controller
         foreach ($types as $type) {
             $result[] = $type['name'];
         }
-        echo json_encode($result);
+        return response()->json($result);
     }
 }