更新产品扩展字段

@@ -102,7 +102,7 @@ class ProductLogic extends  BaseLogic
     public function saveExtendInfo($product_id,$extend){
         //先删除以前的数据
         $extendInfoModel = new ExtendInfo();
-        $extendInfoModel->del(['project_id'=>$this->user['project_id']]);
+        $extendInfoModel->del(['product_id'=>$product_id]);
         if(empty($extend)) {
             return $this->success();
         }