id)->where("game_jam_id", $gameJam->id)->count() === 0){ $reg = new Registration(); $reg->group_amount = $_POST["groupAmount"]; $reg->group()->associate($group); $reg->gameJam()->associate($gameJam); if($reg->save()){ http_response_code(201); }else{ http_response_code(500); } }else { http_response_code(400); echo json_encode(["message" => "already registered"]); } }else { http_response_code(400); } }else{ http_response_code(401); echo json_encode(["message" => "is not login"]); }