当列表数据获取有特定条件或自己写ORM方法时可以用到，支持排序
$grid->model()->select('id','name')->where('status',1)->groupBy('project_id');
$grid->model()->select('id','name')->where('status',1)->groupBy('project_id');
//结合having 查出名字重复的
$grid->model()->select('name_en')->groupBy('name_en')->havingRaw('count(name_en)>1')
//嵌套子查询 查出名字重复的全部信息
$grid->model()->select('id','name_en')->whereIn('name_en',Project::select('name_en')->groupBy('name_en')->havingRaw('count(name_en)>1'))->orderBy('name_en');

$grid->id('ID')->sortable();

$grid->name_cn('名称');

$grid->column('name_cn','名称');

$grid->column('type','类型？')->display(function ($type) {
 return $type == 1 ? '111' : '222';
});

$grid->model()->where('type', 0);

// 下面为三个时间字段的列显示
$grid->release_at();
$grid->created_at();
$grid->updated_at();

 //filter($callback)方法用来设置表格的简单搜索框
 $grid->filter(function ($filter) {
  //1.时间段筛选 设置created_at字段的范围查询
  $filter->between('created_at', '筛选时间')->datetime();
  //2.字段模糊查询 like = '% %'
  $filter->like('name', '姓名');
  //3.字段equal 筛选
  $filter->equal('status', '状态')->select([0 => '下线', 1 => '上线']);
  //4.去掉默认的ID搜索
  $filter->disableIdFilter();
  //5.

 });

$grid->disableExport();

$grid->disableCreateButton();

$grid->disableRowSelector();

$form->disableReset();

 $grid->actions(function ($actions) {
  //关闭删除
 $actions->disableDelete();
 //关闭编辑
 $actions->disableEdit();
 //自定义操作按钮
 $actions->append('<button type="button" class="btn btn-danger noShow" data-id="' . $actions->getKey() . '" >隐藏</button>');
});

$grid->tools(function ($tools) {
 //关闭批量删除
 $tools->batch(function ($batch) {
  $batch->disableDelete();
 });
});

 $form->disableReset();

//默认展示$data['name']的值，新接收的值存储user表name字段
$form->text('user.name', '名称')->default($data['name']);

$form->image('user.logo', 'logo')
    #随机文件名
    ->uniqueName()
    #验证文件格式('mimes:doc,docx,xlsx');
    ->rules('mimes:png')
    #输入框下边的help提示语
    ->help($str);

$form->url('user.website', '官网')
    #默认填充url 传参
    ->default($url)
    #提示的url
    ->help('eg: http://www.aware.bi');

#下拉框展示$message提示语
$form->multipleSelect('project.tags1', $message)
    #下拉框数据
    ->options($tags['children']);

$types = array('0'=>'教育','1'=>'医疗');
$form->select('type', '类型')->options($types);

$users = User::all()->pluck('name', 'id')->toArray();

$form->editor('detail', '详细介绍');

$states = [
 'on' => ['value' => 1, 'text' => '上线', 'color' => 'success'],
 'off' => ['value' => 0, 'text' => '下线', 'color' => 'danger'],
];
$form->switch('status', '上/下线')->states($states);

$form->hidden('is_in');

$form->saving(function (Form $form) {
 #指定值为固定1
 $form->is_in = 1;
 #验证值是够有重复
 if($from->nick_name !== $form->model()->email && User::where('email',$form->email)->value('id')){
 #错误信息提示
 $error = new MessageBag(['title'=>'提示','message'=>'邮箱已存在!']);
  return back()->withInput()->with(compact('error'));
 }
});

 $grid->actions(function ($actions) {
 //自定义操作按钮
 $actions->append('<button type="button" class="btn btn-danger noShow" 
 data-id="' . $actions->getKey() . '" >隐藏</button>');
 //当前数据的ID
});

   $js = <<<EOD
   <script>
   //隐藏的点击事件
$(document).on('click', '.noShow', function() {
 //获取的ID
 var id = $(this).data('id');
  console.log(id);
 swal({
  title: "确认隐藏?",
  type: "warning",
  showCancelButton: true,
  confirmButtonColor: "#DD6B55",
  confirmButtonText: "确认",
  closeOnConfirm: false,
  cancelButtonText: "取消"
 },
 function(){
  $.ajax({
   method: 'post',
   url: '/admin/articles/hidden',
   data: {
    //文章ID
    id:id,
    //post请求token
    _token:LA.token,
   },
   success: function (data) {
    $.pjax.reload('#pjax-container');
    if (typeof data === 'object') {
     if (data.status == 1) {
      swal(data.msg, '', 'success');
     } else {
      swal(data.msg, '', 'error');
     }
    }
   }
  })
 }
 )
});
   </script>
EOD;
   //传递到页面
   $content->body($js);
   //执行你的model
   $content->body();