/**
  * Update the specified resource in storage.
  *
  * @param  \Illuminate\Http\Request  $request
  * @param  int  $id
  * @return \Illuminate\Http\Response
  */
 public function update($id)
 {
     $tour = Tour::findOrFail($id);
     $input = Request::all();
     $data = Tour::whereRaw('alias = ? AND id != ?', [$input['alias'], $id])->first();
     if (!empty($data)) {
         $input['alias'] = create_permalink($input['alias']);
     }
     $photos = [];
     if (!empty($input['photo'])) {
         $temp = count($input['photo']);
         for ($i = 0; $i < $temp; $i++) {
             $photos[] = ['src' => $input['photo'][$i], 'title' => $input['title_img'][$i], 'desc' => $input['desc_img'][$i]];
         }
         $input['photos'] = json_encode($photos);
     }
     $input['destinations'] = destination_encode($input['destinations']);
     $tour->fill($input)->save();
     Session::flash('flash_message', 'Task successfully added!');
     return redirect()->back();
 }