Dcat 1.5.2 数据预处理

    public function User()
    {
        return $this->hasOne(User::class,'owner_id');
    }Copy

//CurrencyOrder 是个model 
  return Grid::make(CurrencyOrder::with('User'), function (Grid $grid) {
            $grid->column('id')->sortable();
            $grid->column('user.name','用户名'); //user 是关联user表的对象 name指向关联的user对象的name属性
            $grid->column('user.email','邮箱');
            $grid->column('title');
            $grid->column('body');
            $grid->column('type')->using([
                1 => '收入',-1 => '支出',
            ]);Copy

   $grid->column('title')->display(function ($value){
     //处理$value               
     return $value;
            });Copy