myc/app/common/dao/store/product/ProductContentDao.php

<?php



namespace app\common\dao\store\product;

use app\common\dao\BaseDao;
use app\common\model\store\product\ProductContent as model;

class ProductContentDao extends BaseDao
{
    protected function getModel(): string
    {
        return model::class;
    }

    /**
     * @Author:Qinii
     * @Date: 2020/5/9
     * @param int $productId
     * @return mixed
     */
    public function clearAttr(int $productId)
    {
        return ($this->getModel())::where('product_id',$productId)->delete();
    }

}