laravel admin实现分类树/模型树的示例代码

<?php

namespace app\admin\models;

use encore\admin\traits\adminbuilder;
use encore\admin\traits\modeltree;
use illuminate\database\eloquent\model;

class category extends model
{
 use modeltree, adminbuilder;

 protected $table = 'category';

 public function __construct(array $attributes = [])
 {
  parent::__construct($attributes);
		//这里根据自己的字段修改
  $this->setparentcolumn('parent_id');
  $this->setordercolumn('sort');
  $this->settitlecolumn('name');
 }
 }

<?php

namespace app\admin\controllers;

use app\admin\models\category;
use encore\admin\controllers\admincontroller;
use encore\admin\facades\admin;
use encore\admin\layout\content;
use encore\admin\show;

class categorycontroller extends admincontroller
{
 /**
  * title for current resource.
  *
  * @var string
  */
 protected $title = '商品分类管理';

 public function index(content $content)
 {
  return admin::content(function ($content) {
   $content->header('商品分类管理');
   $content->body(category::tree(function ($tree) {
    $tree->branch(function ($branch) {
     $src = config('admin.upload.host') . '/' . $branch['image'];
     $logo = "<img src='$src' style='max-width:30px;max-height:30px' class='img'/>";

     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);