hainan/app/AdminAgent/Controllers/SlideController.php

<?php

namespace App\AdminAgent\Controllers;

use App\AdminAgent\Renderable\SelectAgentProduct;
use App\AdminAgent\Renderable\SelectProduct;
use App\AdminAgent\Repositories\Slide;
use App\Models\AgentProduct;
use App\Models\Product;
use Dcat\Admin\Admin;
use Dcat\Admin\Form;
use Dcat\Admin\Grid;
use Dcat\Admin\Show;
use Dcat\Admin\Http\Controllers\AdminController;

class SlideController extends AdminController
{
    /**
     * Make a grid builder.
     *
     * @return Grid
     */
    protected function grid()
    {
        return Grid::make(new Slide(['agentProduct.product:id,title,pictures']), function (Grid $grid) {
        	$grid->model()->where('agent_id', Admin::user()->id)->orderBy('sort');

            $grid->column('id')->sortable();
            $grid->column('title');
            $grid->column('picture')->image('', 60, 60);
			$grid->column('type')->using(['链接产品', '链接网址']);
			$grid->column('url')
				->if(fn($column) => $this->type == 0)
				->then(fn($column) => $column->display($this->agentProduct->product->title ?? ''))
				->else(fn($column) => $column->display($this->url ?? ''));
            $grid->column('status')->switch();
            $grid->column('sort')->editable()->sortable()->width(120);

            $grid->filter(function (Grid\Filter $filter) {
                $filter->equal('id');

            });
        });
    }

    /**
     * Make a show builder.
     *
     * @param mixed $id
     *
     * @return Show
     */
    protected function detail($id)
    {
        return Show::make($id, new Slide(['agentProduct.product:id,title,pictures']), 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('title');
            $show->field('picture')->image('', 80, 80);
			$show->field('type')->using(['链接到产品详情', '链接到网址']);
			$show->field('url')
				->as(function ($v) {
					if($this->type == 0) {
						return $this->agentProduct->product->title;
					}
					return $v;
				});
            $show->field('status')->using(['禁用', '启用']);
            $show->field('sort');
            $show->field('created_at');
            $show->field('updated_at');
        });
    }

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

			$form->display('id');
			$form->text('title')
				->help('主要用于后台显示，方便管理')
				->required();
            $form->image('picture')
				->required()->removable(false)->uniqueName()
				->help('图片大小：750*360');
            $form->select('status')->options(['禁用', '启用'])->default(1)->required();
            $form->radio('type', '链接类型')
				->options(['链接到产品详情', '链接到网址'])
				->value(0)->default(0)
				->when(0, function (Form $form) {
					$form->selectTable('url-0', '链接到产品')
						->help('请选择要链接到的产品')
						->title('选择在售产品')
						->dialogWidth('80%;min-width:825px;')
						->from(SelectAgentProduct::make(['id' => $form->url]))
						->options(function ($v) {
							if (!$v || $this->type != 0)  return [];
							$agent_product = AgentProduct::with('product:id,title')
								->select(['id', 'product_id'])
								->firstWhere(['id' => $v]);
							if (!$agent_product) return [];
							return [$agent_product->id => $agent_product->product->title];
						})
						->pluck('product.title')
						->value($form->model()->url);
				})
				->when(1, function (Form $form) {
					$form->url('url-1', '链接到网址')
						->placeholder('如：https://www.baidu.com/')
						->customFormat(fn() => $this->type == 1 ? $this->url : '');
				});
            $form->text('sort')->default(255)->required();
        })->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');
			}

			//将null字段设置为空值，防止插入数据库出错
			foreach ($form->input() as $k => $v) {
				if (is_null($v)) {
					$form->$k = '';
				}
			}

        	//处理特殊字段
			$form->hidden(['agent_id', 'url']);
        	$form->agent_id = Admin::user()->id;
			$form->status = $form->status ? 1 : 0;
			$form->url = $form->{'url-' . $form->type};
			$form->deleteInput(['url-0', 'url-1']);

			//不允许编辑的字段
			$form->ignore(['id', 'created_at', 'updated_at']);
		})->deleting(function (Form $form) {
			//不允许删除非自己的数据
			if ($form->model()[0]['agent_id'] != Admin::user()->id) {
				return $form->response()->error('数据不存在');
			}
		});
    }
}