public function store(RankRequest $request, User $user)
{
$rank = new Rank();
$rank->fill($request->all());
$rank->save();
$log = new Log();
$log->user_id = $user->id;
$log->log = "新建等级" . $rank->id;
$log->save();
return redirect()->action('RankController@index');
}
