1、 use IlluminateSupportFacadesRoute;

      Route::currentRouteName () == ' 路由名称.edit'

2、 isset(request()->route()->parameters['路由名']) ? '修改' : '添加'; （域名/admin/路由名）

3、return $content

    ->header($this->title)

    ->description('新增')

    ->body($this->form());

  return $content

    ->header($this->title)

    ->description('详情')

    ->body($this->form(false)->edit($id));

  protected function form($status = true)

  {

      if($status)

        $form->text('account_number', '经销商账号')->required()->rules(function($form){

            return $form->model()->id ? 'required' : 'required|unique:account_managements,account_number';

        });

      else

        $form->text('account_number', '经销商账号')->readOnly();

  }