public function getAjaxSubJenisDokumen(Request $request)
 {
     $q = $request->get('q');
     $actifity = $request->get('act');
     if ($q != '' && $actifity != '') {
         $sub_jenis = Sub_jenis_dokumen::select('id', 'nama_sub as text')->where('nama_sub', 'like', "%{$q}%")->where('actifity_id', $actifity)->orWhere('singkatan', "%{$q}%")->get();
         return response()->json($sub_jenis);
     }
     return [];
 }