/**
  * Update the specified resource in storage.
  *
  * @param  int  $id
  * @return Response
  */
 public function traloi($id, CongvandenTraloiFormRequest $request)
 {
     $congvandenfind = Congvanden::findOrFail($id);
     $congvandenfind->traloicongvan = $request->input('traloicongvan');
     $congvandenfind->save();
     // xu ly file
     $now_date = str_replace('/', '_', date('d/m/Y'));
     if ($request->input('upload-file') && $request->hasFile('files')) {
         $files = $request->file('files');
         $newnamefiles = File::savefiles($files, Auth::user()->id);
     }
     $traloicongvan = $request->input('traloicongvan');
     if ($request->input('upload-file') && $request->hasFile('files') && $newnamefiles) {
         $user = Auth::user();
         $congvandenfind->filetralois()->attach($newnamefiles, ['noidung' => $traloicongvan]);
         $stt = Congvanden::getsolanuptheouserid($id, $user->id);
         foreach ($newnamefiles as $value) {
             \DB::table('file_traloicongvandens')->where('congvanden_id', $id)->whereNull('user_id')->where('file_id', $value)->update(['user_id' => $user->id, 'stt' => $stt]);
         }
     } else {
         $user = Auth::user();
         $stt = Congvanden::getsolanuptheouserid($id, $user->id);
         $traloicongvankhongfile = new File_Traloicongvanden(['congvanden_id' => $congvandenfind->id, 'user_id' => $user->id, 'stt' => $stt, 'noidung' => $traloicongvan]);
         $traloicongvankhongfile->save();
     }
     return \Redirect::route('congvanden.index')->with('message', 'Trả lời thành công!');
 }