lianjie_admin/app/Admin/Forms/v3/GoodsSpecForm.php

<?php

namespace App\Admin\Forms\v3;

use Dcat\Admin\Widgets\Form;
use Symfony\Component\HttpFoundation\Response;
use App\Models\v3\Goods as GoodsModel;
use Dcat\Admin\Form\NestedForm;

class GoodsSpecForm extends Form
{

    /**
     * Handle the form request.
     *
     * @param array $input
     *
     * @return Response
     */
    public function handle(array $input)
    {
        // 获取外部传递参数
        $goodsId = $input['goods_id'];
        // $tags= isset($input['tags'])?$input['tags']:[];
        $spec= isset($input['spec'])?$input['spec']:[];
        
        $edit = false;
        $goods = GoodsModel::find($goodsId);
        if(empty($goods)){
            $this->error('商品不存在！');
        }
        // if(!empty($tags)){
        //     $tagsArr = [];
        //     if(!empty($tags)){
        //         foreach($tags as $kt => $tag){
        //             if(empty($tag)){
        //                 unset($tags[$kt]);
        //                 continue;
        //             }
        //             $tagsArr[] = $tag;
        //         }
        //     };
        //     $goods->tags = json_encode($tagsArr);
        // }
        if(!empty($spec)){
            $goods->spec = $spec;
            $edit = true;
        }
        if($edit && $goods->save()){
            return $this->error('修改成功！');
        }
        
        return $this->error('未做任何修改或者修改失败！');
    }

    /**
     * Build a form here.
     */
    public function form()
    {
        $id = $this->getKey();
        $goods = GoodsModel::select('name','tags','spec')->find($id);
        $goodName = empty($goods->name)?'':$goods->name;
        // $tags = empty($goods->tags)?[]:$goods->tags;
        $spec = empty($goods->spec)?[]:$goods->spec;
        $this->hidden('goods_id')->value($id);
        $this->display('name','商品名称')->value($goodName);
        // $this->tags('tags','标签')->options(['新品','热销','新鲜'])->value($tags);
        $this->table('spec', function (NestedForm $table) {
            $table->text('spec_key')->required()->help('如：净含量：500克，保质期：120天，包装：12个/盒等');
            $table->text('spec_value')->required();
        })->value($spec);
    }

    /**
     * The data of the form.
     *
     * @return array
     */
    public function default()
    {
        return [];
    }

}