lianjie_admin/app/Admin/Controllers/v3/GoodsCategoryController.php

<?php

namespace App\Admin\Controllers\v3;

use App\Admin\Repositories\v3\GoodsCategory;
use Dcat\Admin\Form;
use Dcat\Admin\Grid;
use Dcat\Admin\Show;
use Dcat\Admin\Controllers\AdminController;
use App\Models\v3\Category as CategoryModel;
use Symfony\Component\HttpFoundation\Request;
use Illuminate\Support\Facades\DB;
use App\Models\v3\GoodsCategory as GoodsCategoryModel;
class GoodsCategoryController extends AdminController
{
    /**
     * Make a grid builder.
     *
     * @return Grid
     */
    protected function grid()
    {
        return Grid::make(new GoodsCategory(), function (Grid $grid) {
            $grid->column('id')->sortable();
            $grid->column('category_id')->display(function($categoryId){
                $item = CategoryModel::getInfo($categoryId,'title');
                return empty($item) ? '' : $item->title;
            });
            $grid->column('title');
            $grid->column('cover_img')->image('',50);
            $grid->column('sort');

            $grid->model()->orderBy('id','desc');
        
            $grid->filter(function (Grid\Filter $filter) {
                $filter->equal('id');
        
            });
            $grid->disableBatchDelete();
        });
    }

    /**
     * Make a show builder.
     *
     * @param mixed $id
     *
     * @return Show
     */
    protected function detail($id)
    {
        return Show::make($id, new GoodsCategory(), function (Show $show) {
            $show->field('id');
            $show->field('category_id')->as(function($categoryId){
                $item = CategoryModel::getInfo($categoryId,'title');
                return empty($item) ? '' : $item->title;
            });
            $show->field('title');
            $show->field('cover_img')->image('',50);
            $show->field('sort');
            $show->field('created_at');
            $show->field('updated_at');
        });
    }

    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        return Form::make(new GoodsCategory(), function (Form $form) {
            $form->hidden('id');
            $category = CategoryModel::getArray([['parent_id','>',0]]);
            $form->select('category_id')->width(4)->required()->options($category);
            $form->text('title')->width(4)->required();
            $form->image('cover_img')->width(2)->uniqueName();
            $form->number('sort');

            $form->disableResetButton();
            $form->disableViewCheck();
            $form->disableEditingCheck();
            $form->disableCreatingCheck();
        });
    }
    
    /**
     * 获取商品类目列表
     */
    public function getList(Request $request)
    {
        $categoryId = $request->get('q');
        $list = GoodsCategoryModel::where('category_id',$categoryId)->get(['id',DB::raw('title as text')]);
        return $list;
    }
}