// Get Cost from RajaOngkir
    protected function getCostData(Request $request)
    {
        // $origin = "153"; // Jakarta Selatan
        // $destination = $request->district;
        // $weight = $request->weightData;
        // $courier = "jnt";

        $curl = curl_init();

        curl_setopt_array($curl, array(
          CURLOPT_URL => "https://pro.rajaongkir.com/api/cost",
          CURLOPT_RETURNTRANSFER => true,
          CURLOPT_ENCODING => "",
          CURLOPT_MAXREDIRS => 10,
          CURLOPT_TIMEOUT => 30,
          CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
          CURLOPT_CUSTOMREQUEST => "POST",
          CURLOPT_POSTFIELDS => "origin=501&originType=city&destination=574&destinationType=subdistrict&weight=1700&courier=jne",
          CURLOPT_HTTPHEADER => array(
            "content-type: application/x-www-form-urlencoded",
            "key: $this->rajaOngkirAPIKey"
          ),
        ));

        $response = curl_exec($curl);
        $err = curl_error($curl);

        curl_close($curl);

        if ($err) {
          return "cURL Error #:" . $err;
        } else {
          return response()->json($response);
        }
    }