界面

代码

<?php

namespace App\Admin\Controllers\Demo;

use App\Models\Demo\Category;

use Encore\Admin\Form;
use Encore\Admin\Grid;
use Encore\Admin\Facades\Admin;
use Encore\Admin\Layout\Content;
use App\Http\Controllers\Controller;
use Encore\Admin\Controllers\ModelForm;
use Encore\Admin\Tree;

class CategoryController extends Controller
{
    ...

    protected function tree()
    {
        return Category::tree(function (Tree $tree) {

            $tree->branch(function ($branch) {

                $src = config('admin.upload.host') . '/' . $branch['logo'] ;

                $logo = "<img src='$src' style='max-width:30px;max-height:30px' class='img'/>";

                return "{$branch['id']} - {$branch['title']} $logo";

            });

        });
    }

    protected function form()
    {
        return Category::form(function (Form $form) {

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

            $form->select('parent_id')->options(Category::selectOptions());

            $form->text('title');
            $form->textarea('describe');
            $form->image('logo');

            $form->display('created_at', 'Created At');
            $form->display('updated_at', 'Updated At');
        });
    }
}

模型

app/Models/Demo/Category.php

<?php

namespace App\Models\Demo;

use Encore\Admin\Traits\AdminBuilder;
use Encore\Admin\Traits\ModelTree;
use Illuminate\Database\Eloquent\Model;

class Category extends Model
{
    use ModelTree, AdminBuilder;

    protected $table = 'demo_categories';

public static function boot()
{
    parent::boot();

    static::saved(function (Model $model) {

        //获取id $model->id

    });
}
}

表结构

CREATE TABLE `demo_categories` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `parent_id` int(11) NOT NULL DEFAULT '0',
  `order` int(11) NOT NULL DEFAULT '0',
  `title` varchar(50) COLLATE utf8_unicode_ci NOT NULL,
  `logo` varchar(50) COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
  `describe` varchar(50) COLLATE utf8_unicode_ci NOT NULL,
  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

-END-