App\Http\Controllers\Backend\CommentController::update PHP Method

    public function update(Request $request, $id)
    {
        //
        $this->validate($request, ['nickname' => 'required', 'content' => 'required']);
        if (Comment::where('id', $id)->update(Input::except(['_method', '_token']))) {
            return Redirect::to('admin/comments');
        } else {
            return Redirect::back()->withInput()->withErrors('更新失败！');
        }
    }