摘要：根據的基本操作步驟依次完成如下操作主要是參考內置的菜單管理的功能，利用實現業務中的數據管理。

根據laravel的基本操作步驟依次完成如下操作：
主要是參考laravel-admin內置的Menu菜單管理的功能，利用ModelTree實現業務中的Tree數據管理。

1. 創建模型
    php artisan make:model Models/Category
2. 創建遷移文件
    php artisan make:migration create_categories_table
3. 創建填充文件
    php artisan make:seeder CategoriesSeeder
4. 創建后端控制器
    php artisan admin:make CategoryController --model=AppModelsCategory
5. 創建后端路由
    app/admin/routes.php ： $router->resource("/web/categories",CategoryController::class);
6. 添加后端菜單
    /web/categories：菜單路徑
7. 其他定義及編輯定制

namespace AppModels;

use EncoreAdminTraitsAdminBuilder;
use EncoreAdminTraitsModelTree;
use IlluminateDatabaseEloquentModel;

class Category extends Model
{
    use ModelTree, AdminBuilder;
    //
    protected $fillable = ["name","description","order","parent_id"];

    public function __construct(array $attributes = [])
    {
        parent::__construct($attributes);

        $this->setParentColumn("parent_id");
        $this->setOrderColumn("order");
        $this->setTitleColumn("name");
    }
}

class CreateCategoriesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create("categories", function (Blueprint $table) {
            $table->increments("id");
            $table->string("name");
            $table->string("description")->nullable();
            $table->integer("order")->unsigned();
            $table->integer("parent_id")->unsigned()->nullable();
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists("categories");
    }
}

class CategoriesSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        //
        DB::table("categories")->delete();
        for($i = 0; $i < 3; $i++ ){
            DB::table("categories")->insert(
                [
                    "name" => "CAT".$i,
                    "description" => "desc_".$i,
                    "order" => $i,
                    "parent_id" => null
                ]
            );
        }

    }
}

header($this->header);
            $content->description("類型列表");

            $content->row(function (Row $row) {

                $row->column(6, $this->treeView()->render());

                $row->column(6, function (Column $column) {
                    $form = new EncoreAdminWidgetsForm();
                    $form->action(admin_base_path("/web/categories"));


                    $form->text("name","類型名稱");
                    $form->textarea("description","類型描述信息");
                    $form->number("order","排序序號");
                    $form->select("parent_id","父類名稱")->options(Category::selectOptions());
                    
                    $form->hidden("_token")->default(csrf_token());

                    $column->append((new Box(trans("admin.new"), $form))->style("success"));
                });
            });



        });
    }


    protected function treeView()
    {
        return Category::tree(function (Tree $tree) {
            $tree->disableCreate();
            return $tree;
        });
    }
    

    /**
     * Edit interface.
     *
     * @param $id
     * @return Content
     */
    public function edit($id)
    {
        return Admin::content(function (Content $content) use ($id) {

            $content->header($this->header);
            $content->description("編輯類型");

            $content->body($this->form()->edit($id));
        });
    }

    /**
     * Create interface.
     *
     * @return Content
     */
    public function create()
    {
        return Admin::content(function (Content $content) {

            $content->header($this->header);
            $content->description("添加類型");

            $content->body($this->form());
        });
    }


    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        return Admin::form(Category::class, function (Form $form) {

            $form->display("id", "ID");

            $form->text("name","類型名稱");
            $form->textarea("description","類型描述信息");
            $form->number("order","排序序號");
            $form->select("parent_id","父類名稱")->options(Category::selectOptions());


        });
    }


    public function getCategoryOptions()
    {
        return DB::table("categories")->select("id","name as text")->get();
    }
}

$router->resource("/web/categories",CategoryController::class);

具體操作略