hainan/app/AdminAgent/Controllers/AgentProductController.php

<?php

namespace App\AdminAgent\Controllers;

use App\AdminAgent\Renderable\SelectProduct;
use App\AdminAgent\Repositories\AgentProduct;
use App\Common\ProductStatus;
use App\Models\Category;
use App\Models\Channel;
use App\Models\Product;
use App\Models\Supplier;
use Dcat\Admin\Admin;
use Dcat\Admin\Form;
use Dcat\Admin\Grid;
use Dcat\Admin\Show;
use Dcat\Admin\Http\Controllers\AdminController;
use Dcat\Admin\Widgets\Table;

class AgentProductController extends AdminController
{
    /**
     * Make a grid builder.
     *
     * @return Grid
     */
    protected function grid()
    {
        return Grid::make(new AgentProduct(['product.supplier:id,name', 'category:id,name']), function (Grid $grid) {
			$agent_id = Admin::user()->id;
        	$grid->model()->where('agent_id', $agent_id);

            $grid->column('id')->sortable();
            $grid->column('product.picture', '产品图片')->image(60, 60);
            $grid->column('product.title', '产品名称')->limit(15);
			$grid->column('product_id', '产品详情')
				->display('查看')
				->modal(function ($v) {
					$titles = ['供应商', '产品标题', '产品图片', '原价', '现价', '销量', '库存'];
					$pic = isset($this->product->picture)
						? "<img data-action=\"preview-img\" src=\"{$this->product->picture}\" style=\"max-width:80px;max-height:200px;cursor:pointer\" class=\"img img-thumbnail\">"
						: '';
					$data = [[
						$this->product->supplier->name ?? '',
						$this->product->title ?? '',
						$pic,
						$this->product->original_price ?? '',
						$this->product->price ?? '',
						$this->product->sale ?? '',
						$this->product->stock ?? '',
					]];
					return Table::make($titles, $data);
				});
            $grid->column('price');
            $grid->column('original_price');
            $grid->column('sale');

			$channels = Channel::where('agent_id', $agent_id)->pluck('name', 'id')->toArray();
			$grid->column('channel_id', '频道')
				->display('查看')
				->modal('关联频道', function ($modal) use ($channels) {
					$data = array_flip(explode(',', $this->channel_id));
					$data = array_intersect_key($channels, $data);
					return Table::make(['频道ID', '频道名称'], $data);
				});
            $grid->column('category.name', '分类')->label();
            $grid->column('status')
				->using(ProductStatus::array())
				->dot([
					ProductStatus::ON_SALE => 'success',
					ProductStatus::UNAUDITED => '',
					ProductStatus::REFUSE => 'danger',
					ProductStatus::SOLD_OUT => 'warning',
				], 'primary');
			$grid->column('created_at');
            $grid->column('updated_at');

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

				$filter->model()->where('agent_id', Admin::user()->id);

				$filter->equal('id')->width(2);
				$filter->like('product.title', '产品标题')->width(3);
				$filter->equal('status')->select(ProductStatus::array())->width(2);

				$options = Supplier::where('status', 1)->pluck('name', 'id')->toArray();
				$filter->equal('product.supplier_Id', '供应商')->select($options)->width(2);
            });
        });
    }

    /**
     * Make a show builder.
     *
     * @param mixed $id
     *
     * @return Show
     */
    protected function detail($id)
    {
        return Show::make($id, new AgentProduct(), function (Show $show) {
            $show->field('id');
            $show->field('agent_id');
            $show->field('product_id');
            $show->field('price');
            $show->field('original_price');
            $show->field('sale');
            $show->field('channel_id');
            $show->field('category_id');
            $show->field('status');
            $show->field('created_at');
            $show->field('updated_at');
        });
    }

    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        return Form::make(new AgentProduct(), function (Form $form) {
			$agent_id = Admin::user()->id;

            $form->display('id');
            $form->hidden('agent_id')->value($agent_id);
            $form->multipleSelectTable('product_id', '供应商产品')
				->title('选择产品')
				->dialogWidth('80%;min-width:825px;')
				->from(SelectProduct::make())
				->required();
            $form->text('price')->required();
            $form->text('original_price')->required();
            $form->text('sale')->default(0);

			$options = Channel::selectOptions(fn($query) => $query->where('agent_id', $agent_id));
			array_shift($options);
			$form->multipleSelect('channel_id')
				->options($options);

			$options = Category::selectOptions(fn($query) => $query->where('agent_id', $agent_id));
			array_shift($options);
            $form->select('category_id')
				->options($options)
				->required();
            $form->select('status')
				->options([
					ProductStatus::ON_SALE => '上架',
					ProductStatus::SOLD_OUT => '下架',
				])
				->default(ProductStatus::ON_SALE)
				->required();
        })->saving(function (Form $form) {
			$agent_id = Admin::user()->id;

			//判断供应商产品是否存在或下架
			if (!Product::query()->where(['id' => $form->product_id, 'status' => ProductStatus::ON_SALE])->exists()) {
				return $form->response()->error('供应商不存在该产品或已下架，不可销售');
			}

        	//不允许编辑的字段
			$form->ignore(['id', 'agent_id', 'created_at', 'updated_at', 'deleted_at']);

			//处理特殊字段
			$form->agent_id = $agent_id;
			$form->status = ($form->status == ProductStatus::ON_SALE) ? ProductStatus::ON_SALE : ProductStatus::SOLD_OUT;

			//判断是否重复
			$agent_product = $form->repository()->model()->withTrashed()->where(['agent_id' => $agent_id, 'product_id' => $form->product_id])->first();
			if ($agent_product) {
				//如果已经软删除了，解除软删除后再更新
				if ($agent_product->deleted_at) {
					$agent_product->deleted_at = null;
					$agent_product->update($form->input());
					return $form->response()->success('保存成功');
				}
				return $form->response()->error('该产品已经存在，请勿重复发布');
			}
		});
    }
}