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

<?php

namespace App\Admin\Forms\v3;

use App\Models\v3\GoodsBanners;
use Dcat\Admin\Widgets\Form;
use Symfony\Component\HttpFoundation\Response;
use App\Models\v3\Goods as GoodsModel;
use App\Models\v3\GoodsBanners as GoodsBannerModel;
use Dcat\Admin\Contracts\LazyRenderable;
use Dcat\Admin\Traits\LazyWidget;
use Illuminate\Support\Facades\DB;

class GoodsImageForm extends Form implements LazyRenderable
{
    use LazyWidget;

    protected $search = '';
    /**
     * 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'];
        $coverImg= $input['cover_img'];
        $bannerImg= $input['img_banner'];
        
        if($goodsId > 0 && !empty($coverImg)){
            $lastLen = strrpos($coverImg,',');
            if($lastLen != false){
                $coverImg = substr($coverImg,$lastLen+1);
            }
            if(strlen($coverImg) > 200){
                return $this->error('上传图片名称过长');
            }
            $data = ['cover_img' => $coverImg];
            $res1 = GoodsModel::where('id',$goodsId)->update($data); 
        }
        if($goodsId > 0 && !empty($bannerImg)){
            $banner = GoodsBannerModel::where('goods_id',$goodsId)->delete();
           
            foreach($bannerImg as $value){
                $banner = new GoodsBanners();
                $banner->goods_id = $goodsId;
                $banner->type = 1;
                $banner->created_at = time();
                $banner->updated_at = time();
                $banner->path = $value;
                $res2 = $banner->save();
            }
        }
       
        if((isset($res1) && $res1) || (isset($res2) && $res2)){
            return $this->success('修改成功','/goods?'.$this->getSearch($this->search));
        }
        return $this->error('未做任何修改');
    }

    /**
     * Build a form here.
     */
    public function form()
    {
        $id = $this->payload['id'] ?? 0;
        $goodName = $this->payload['name'] ?? '';
        $coverImg = $this->payload['cover_img'] ?? '';
        $this->search = $this->payload['search'] ?? '';

        $this->hidden('goods_id')->value($id);
        $this->display('name','商品名称')->value($goodName);
        $this->image('cover_img','封面图')->uniqueName()->retainable()->customFormat(function() use($coverImg){
            return [$coverImg];
        })->autoUpload();
        $this->multipleImage('img_banner','轮播图')->uniqueName()->customFormat(function() use($id){
            if(!$id){
                return ;
            }
            $banners = GoodsBanners::where('goods_id',$id)->pluck('path')->toArray();
            return empty($banners) ? [] : $banners;
        })->autoUpload();
        $this->disableResetButton();
    }

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

    public function getSearch($data)
    {
        $return = '';
        if(is_array($data) && count($data) > 0){
            unset($data['_pjax']);
            foreach($data as $key => $value){
                $return .= $key.'='.$value.'&';
            }
        }
        return $return;
    }

}