Laravel admin implements classification tree/model tree

setParentColumn('parent_id');
  $this->setOrderColumn('sort');
  $this->setTitleColumn('name');
 }
 }

header('商品分类管理');
   $content->body(Category::tree(function ($tree) {
    $tree->branch(function ($branch) {
     $src = config('admin.upload.host') . '/' . $branch['image'];
     $logo = "";

     return "{$branch['id']} - {$branch['name']} $logo";
    });
   }));
  });
 }
	//下面是自己的代码
	//.......
 }

$router->resource('categories',CategoryController::class);

$form->select('parent_id', __('Parent id'))->options(Category::selectOptions())->default(1);