public function search(Request $request)
 {
     $cari = $request->get('search');
     if ($cari == '') {
         return redirect()->back();
     } else {
         $result = surat::where('nama_surat', 'LIKE', '%' . $cari . '%')->paginate(10);
         return view('cms.indexcari')->with('result', $result);
     }
 }