$router->get('mails/send', 'MailController@send');
  $router->post('mails/send', 'MailController@send');

public function send(Content $content)
  {
    //添加请求
    if (request()->isMethod('post')) {
 
      //验证
      $data = request()->post();
 
      $validate = Validator::make($data, [
        'title' => 'required|max:125',
        'content' => 'required'
      ]);
      //处理
      if ($validate->fails()) {
        $content->withWarning('提醒', $validate);
      } else {
        Mail::create($data);
        $content->withSuccess('提醒', '操作成功');
        return redirect('/admin/mails');
      }
    }
 
 
    $content->header('群发邮件');
 
    $form = new \Encore\Admin\Widgets\Form();
    $form->action('send');
    $form->text('title','标题')->rules('required');
    $form->textarea('content','内容')->rules('required');
 
    $content->body($form);
    $js = <<<SCRIPT
    
SCRIPT;
    Admin::script($js);
    return $content;
  }