jucai/app/Models/Admin/AdminMenu.php

<?php
namespace App\Models\Admin;

use Encore\Admin\Traits\AdminBuilder;
use Encore\Admin\Traits\ModelTree;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Support\Facades\Cache;

class AdminMenu extends Model
{
    protected $table = 'admin_menu';

    use AdminBuilder, ModelTree {
        ModelTree::boot as treeBoot;
    }

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = ['parent_id', 'order', 'title', 'icon', 'uri', 'permission'];


    /**
     * @return array
     */
    public function allNodes() : array
    {
        $order="`order` = 0,`order`";
        return static::orderByRaw($order)->get()->toArray();
    }

    /**
     * determine if enable menu bind permission.
     *
     * @return bool
     */
    public function withPermission()
    {
        return (bool) config('admin.menu_bind_permission');
    }

    /**
     * Detach models from the relationship.
     *
     * @return void
     */
    protected static function boot()
    {
        static::treeBoot();

        static::deleting(function ($model) {
        });
    }

    /**
     * 菜单封装装.
     * return object
     */
    public static function menuArr()
    {
        $order="`order` = 0,`order`";
        $menus = self::orderByRaw($order)->select(['id', 'parent_id', 'title'])->get();
        $menu_array=[];
        foreach ($menus as $menu) {
            $menu_array[$menu['id']]=$menu;
        }
        $menu_res=[];
        foreach ($menu_array as $key => $value) {
            $menu_res[$key] = self::getName($value, $menu_array);
        }
        return $menu_res;
    }

    public static function getName($value, $list)
    {
        if ($value['parent_id'] == 0) {
            return $value['title'];
        } elseif (isset($list[$value['parent_id']])) {
            return self::getName($list[$value['parent_id']], $list)."-{$value['title']}";
        }
        return "";
    }
}