修改结算商品库存

@@ -302,7 +302,7 @@ class Cars extends Api
             $key = ['goods_id','price','goods_number','style'];
             $res_goods = Common::array_merge_more($key,$goods_id_s,$price_s,$goods_number_s,$style_s);
             //查询商品
-            $res = Common::selectSoftWhereData('goods',['id'=>['in',$goods_id_s]],'id,name,image,expense_price,introduce');
+            $res = Common::selectSoftWhereData('goods',['id'=>['in',$goods_id_s]],'id,name,image,expense_price,stock,introduce');
             $total_price = 0;//总商品费用（不含运费）
             $total_expense_price = 0;//总运费
             foreach ($res as &$value){
@@ -310,6 +310,9 @@ class Cars extends Api
                 foreach($res_goods as $g_value){
                     if($value['id'] == $g_value['goods_id']){
                         $value['price'] = $g_value['price'];//商品价格
+                        if(($value['stock'] <=> $g_value['goods_number']) == -1){
+                            $this->error('商品名称为'.$value['name'].'的库存不足');
+                        }
                         $value['goods_number'] = $g_value['goods_number'];//商品数量
                         $value['style'] = $g_value['style'];//商品款式
                         $total_price += $g_value['price'] * $g_value['goods_number'];