文件地址：app\services\product\product\StoreProductServices.php
方法名称：save
根据图片红框修改
代码：
$data['brand_com'] = $data['brand_id'] ? implode(',', $data['brand_id']) : '';
$data['brand_id'] = $data['brand_id'] ? end($data['brand_id']) : 0;
3351
{{like_count}}
{{collect_count}}
