初始上传

app/model/goods/GoodsStock.php

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+<?php
+/**
+ * Niushop商城系统 - 团队十年电商经验汇集巨献!
+ * =========================================================
+ * Copy right 2019-2029 杭州牛之云科技有限公司, 保留所有权利。
+ * ----------------------------------------------
+ * 官方网址: https://www.niushop.com
+ * =========================================================
+ */
+
+namespace app\model\goods;
+
+use app\model\BaseModel;
+use think\db\exception\DataNotFoundException;
+use think\db\exception\DbException;
+use think\db\exception\ModelNotFoundException;
+use think\facade\Db;
+
+/**
+ * 商品库存
+ */
+class GoodsStock extends BaseModel
+{
+
+    /**
+     * 增加库存
+     * @param $param
+     * @return array
+     * @throws DbException
+     */
+    public function incStock($param)
+    {
+        $condition = array (
+            [ "sku_id", "=", $param[ "sku_id" ] ]
+        );
+        $num = $param[ "num" ];
+        $sku_info = model('goods_sku')->getInfo($condition, "goods_id,stock");
+        if (empty($sku_info))
+            return $this->error(-1, "");
+
+        //编辑sku库存
+        $result = model('goods_sku')->setInc($condition, "stock", $num);
+
+        //编辑商品总库存(暂不考虑查询判断)
+        $goods_condition = array (
+            [ "goods_id", "=", $sku_info[ "goods_id" ] ]
+        );
+        $res = model('goods')->setInc($goods_condition, "goods_stock", $num);
+        return $this->success($result);
+    }
+
+    /**
+     * 减少库存
+     * @param $param
+     * @return array
+     * @throws DataNotFoundException
+     * @throws DbException
+     * @throws ModelNotFoundException
+     */
+    public function decStock($param)
+    {
+
+        $num = $param[ "num" ];
+        $condition = array (
+            [ "sku_id", "=", $param[ "sku_id" ] ]
+        );
+        $sku_info = Db::name("goods_sku")->where($condition)->field("goods_id,stock,sku_name")->lock(true)->find();
+        if (empty($sku_info)) {
+            return $this->error();
+        }
+        if ($sku_info[ "stock" ] < $num) {
+            return $this->error('', $sku_info[ "sku_name" ] . "库存不足！");
+        }
+        //编辑sku库存
+        $result = model('goods_sku')->setDec($condition, "stock", $num);
+        if ($result === false) {
+            return $this->error();
+        }
+
+        //编辑商品总库存(暂不考虑查询判断)
+        $goods_condition = array (
+            [ "goods_id", "=", $sku_info[ "goods_id" ] ]
+        );
+        $res = model('goods')->setDec($goods_condition, "goods_stock", $num);
+        return $this->success($res);
+    }
+
+}