hainan/app/AdminAgent/Controllers/ChannelController.php

<?php

namespace App\AdminAgent\Controllers;

use App\AdminAgent\Repositories\Channel;
use App\Models\Channel as ChannelModel;
use Dcat\Admin\Admin;
use Dcat\Admin\Form;
use Dcat\Admin\Grid;
use Dcat\Admin\Layout\Content;
use Dcat\Admin\Layout\Row;
use Dcat\Admin\Show;
use Dcat\Admin\Http\Controllers\AdminController;
use Dcat\Admin\Tree;
use Illuminate\Support\Facades\Storage;

class ChannelController extends AdminController
{
	public function index(Content $content)
	{
		return $content->header('产品频道')
			->body(function (Row $row) {
				$tree = new Tree(new ChannelModel());
				$tree->query(function ($model) {
					//agent_id为0是系统分类，其它是代理商分类
					return $model->where('agent_id', Admin::user()->id)->orderBy('sort')->orderBy('id');
				});

				/*$prefix = Storage::disk('public')->url('');
				$tree->branch(function ($branch) use ($prefix) {
					$src = $prefix . $branch['icon'] ;
					$logo = '<img data-action="preview-img" src="'.$src.'" style="max-width:30px;max-height:30px;cursor:pointer;margin-left:20px;" class="img">';

					return "{$branch['id']} - {$branch['name']} $logo";
				});*/
				$row->column(12, $tree);
			});
	}

	/**
     * Make a grid builder.
     *
     * @return Grid
     */
    protected function grid()
    {
        return Grid::make(new Channel(['parent']), function (Grid $grid) {
			$grid->model()->where('agent_id', Admin::user()->id)
				->orderBy('sort')->orderBy('id', 'desc');

            $grid->column('id')->sortable();
            $grid->column('icon')->image('', 60, 60);
            $grid->column('name');
            $grid->column('parent.name');
            $grid->column('sort')->editable()->width(120);

            $grid->filter(function (Grid\Filter $filter) {
				$filter->panel();

                $filter->equal('id')->width(2);
				$filter->like('name')->width(3);
            });
        });
    }

    /**
     * Make a show builder.
     *
     * @param mixed $id
     *
     * @return Show
     */
    protected function detail($id)
    {
        return Show::make($id, new Channel(['parent']), function (Show $show) {
			//不允许查看非自己的数据
			if ($show->model()->agent_id != Admin::user()->id) {
				Admin::exit('数据不存在');
			}

			$show->field('id');
            $show->field('icon')->image('', 80, 80);
            $show->field('name');
            $show->field('parent.name');
            $show->field('sort');
        });
    }

    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        return Form::make(new Channel(), function (Form $form) {
			//不允许修改非自己的数据
			if ($form->isEditing() && $form->model()->agent_id != Admin::user()->id) {
				return $form->response()->error('数据不存在');
			}

			$form->display('id');
            $form->image('icon')->uniqueName()->removable(false);
            $form->text('name')->required();
			$form->select('pid')->options(\App\Models\Channel::selectOptions())->default(0)->required();
            $form->text('sort')->default(255);
        })->saving(function (Form $form) {
			//不允许修改非自己的数据
			if ($form->isEditing() && $form->model()->agent_id != Admin::user()->id) {
				return $form->response()->error('数据不存在');
			}

			//处理特殊字段
			$form->hidden(['agent_id']);
			$form->agent_id = Admin::user()->id;
			$form->sort = $form->sort ?? 255;

			//不允许编辑的字段
			$form->ignore(['id', 'deleted_at']);
		})->deleting(function (Form $form) {
			//不允许删除非自己的数据
			if (array_filter($form->model()->toArray(), fn($v) => $v['agent_id'] != Admin::user()->id)) {
				return $form->response()->error('数据不存在');
			}
		});
    }
}