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@@ -0,0 +1,248 @@
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+<?php
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+
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+
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+namespace App\Servers;
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+
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+
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+
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+
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+use App\Models\Goods;
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+use App\Models\GoodsSku;
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+use App\Models\GoodsSpec;
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+use App\Models\Shopping;
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+
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+/**
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+ * 购物车服务
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+ */
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+class ShoppingCartServer
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+{
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+
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+ static private $server = null;
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+
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+
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+ private $errorMsg = '';
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+
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+ private function __construct()
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+ {
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+
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+ }
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+
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+ /**
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+ * 创建对象
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+ * @return ShoppingCartServer
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+ */
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+ static function creatServer()
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+ {
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+ if (empty(self::$server)) self::$server = new ShoppingCartServer();
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+ return self::$server;
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+ }
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+
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+
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+ /**
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+ * 获取购物车列表
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+ * @param $m_id
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+ * @param $shop_id
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+ * @return array
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+ */
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+ function getShoppingList($m_id,$shop_id)
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+ {
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+ //获取购物车商品数据
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+ $where = [['p.m_id',$m_id], ['p.shop_id',$shop_id], ['p.type',1], ['g.is_del',0], ['g.status',1]];
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+ $shopping = Shopping::from('shopping as p')
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+ ->leftJoin('goods as g','g.id','=','p.goods_id')
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+ ->where($where)
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+ ->select(['p.id as shopping_id','p.number','p.goods_spec_id','g.id as goods_id','g.shop_id','g.goods_name','g.goods_image','g.price','g.spec_type','g.category_id','g.pack_price','g.is_infinite','g.stock'])
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+ ->orderBy('p.id','asc')
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+ ->get();
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+
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+ $total_num = 0;//总商品数
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+ $total_goods_money = '0.00';//总商品费用
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+ $total_pack_price = 0;//打包费
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+ $goods_list = [];//商品列表
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+ $goodsNumber = [];//记录商品一共点了多少,判断是否限购超库存
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+
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+ foreach ($shopping as $value){
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+ $goods_id = $value->{'goods_id'};//商品id
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+ $goods_price = $value->{'price'};//商品金额
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+ $spec_type = $value->{'spec_type'};//商品类型
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+ $goods_spec_id = $value->{'goods_spec_id'};//商品规格id
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+ $status_str = '';
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+ $goods_attr = "";//规则值
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+ $goods_number = $value['number'];//商品数量
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+ $goods_spec = [];
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+ //记录商品一共点了多少,判断是否限购超库存
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+ if (isset($goodsNumber[$goods_id])){
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+ $goodsNumber[$goods_id] = bcadd($goodsNumber[$goods_id],$goods_number);
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+ }else{
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+ $goodsNumber[$goods_id] = $goods_number;
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+ }
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+
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+ if ($goods_spec_id && $spec_type == 2){//存在规格
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+ $specIds = array_filter(explode('_', $goods_spec_id));
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+ $goods_spec = GoodsSpec::where('goods_id',$goods_id)
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+ ->whereIn('id',$specIds)
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+ ->where('is_del',0)
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+ ->select(['spec_name','spec_price'])
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+ ->get();
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+ foreach ($goods_spec as $spec_value){
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+ $goods_attr .= $spec_value['spec_name'] . ',';
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+ $goods_price = bcadd($spec_value['spec_price'],$goods_price,2);
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+ }
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+ }
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+ //商品不是无限库存,判断库存是否足够
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+ if ($value->{'is_infinite'} != 1){
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+ if ($value->{'stock'} < $goodsNumber[$goods_id]){
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+ $status_str = '库存不足';
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+ $this->errorMsg = $value['goods_name'].'库存不足';
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+ }
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+ }
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+ //计算价格
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+ $goods_money = bcmul($goods_price,$goods_number,2);
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+
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+
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+ $goods_list[] = [
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+ 'shop_id' => $value['shop_id'],
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+ 'category_id' => $value['category_id'],
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+ 'goods_id' => $goods_id,
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+ 'goods_spec_id' => $goods_spec_id,
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+ 'goods_money' => rtrim(rtrim($goods_money, '0'),'.'),
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+ 'goods_number' => $goods_number,
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+ 'goods_name' => $value['goods_name'],
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+ 'goods_image' => $value['goods_image'],
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+ 'spec_type' => $value['spec_type'],
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+ 'price' => $goods_price,
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+ 'pack_price' => $value['pack_price'],
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+ 'goods_attr' => $goods_attr,
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+ 'is_infinite' => $value['is_infinite'],
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+ 'status_str' => $status_str,
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+ ];
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+ //计算打包费
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+ $total_pack_price = bcadd($total_pack_price,bcmul($goods_number,$value['pack_price'],2),2);
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+ //计算总数量
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+ $total_num += $goods_number;
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+ //计算总商品费用
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+ $total_goods_money = bcadd($total_goods_money,$goods_money,2);
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+ }
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+ //订单总价-商品总价+总包装费
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+ $total_price = bcadd($total_goods_money,$total_pack_price,2);
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+
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+ $data['total_price'] = rtrim(rtrim($total_price, '0'),'.');
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+ $data['total_num'] = (int)$total_num;
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+ $data['total_goods_money'] = rtrim(rtrim($total_goods_money, '0'),'.');
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+ $data['pack_price'] = $total_pack_price;
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+ $data['err_msg'] = $this->errorMsg;
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+ $data['goods_list'] = $goods_list;
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+
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+ $this->errorMsg = '';
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+
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+ return $data;
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+ }
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+
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+ /**
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+ * 添加购物车
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+ * @param $m_id
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+ * @param $shop_id
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+ * @param $category_id
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+ * @param $goods_id
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+ * @param $goods_spec_id
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+ * @param $number
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+ * @return array
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+ */
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+ function saveShopping($m_id,$shop_id,$category_id,$goods_id,$goods_spec_id,$number)
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+ {
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+ if (empty($goods_spec_id)){
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+ $goods_spec_id = '';
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+ }
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+ //获取商品
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+ $goods = Goods::where('is_del',0)
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+ ->where('id',$goods_id)
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+ ->where('shop_id',$shop_id)
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+ ->where('category_id',$category_id)
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+ ->select(['id as goods_id','is_infinite','stock','status','spec_type'])
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+ ->first();
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+ if (empty($goods)) return ['code' => 0, 'msg' => '当前商品不存在'];
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+ if ($goods->{'status'} != 1) return ['code' => 0, 'msg' => '当前商品已下架'];
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+ //如果商品是多规格但是没选规格
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+ if ($goods->{'spec_type'} == 2 && empty($goods_spec_id)){
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+ return ['code' => 0, 'msg' => '请选择商品规格'];
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+ }elseif ($goods->{'spec_type'} == 2 && $goods_spec_id){
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+ //如果商品是多规格,查询规格商品是否选择全
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+ $skuIds = GoodsSku::where('goods_id',$goods->{'goods_id'})->where('is_del',0)->pluck('id')->toArray();
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+ $spec = array_filter(explode('_', $goods_spec_id));
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+ foreach ($skuIds as $skuId){
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+ $specIds = GoodsSpec::where('goods_id',$goods->{'goods_id'})->where('is_del',0)->where('sku_id',$skuId)->pluck('id')->toArray();
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+
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+ if (!array_intersect($spec,$specIds)){
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+ return ['code' => 0, 'msg' => '请完整选择规格'];
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+ }
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+ }
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+ }
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+
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+ //获取购物车是否存在此商品
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+ $where = [['m_id',$m_id], ['shop_id',$shop_id], ['category_id',$category_id], ['goods_id',$goods_id]];
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+ //获取此商品数量
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+ $shopping_number = Shopping::where($where)->sum('number');
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+ $total_number = bcadd($shopping_number,$number);
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+ if ($goods_spec_id) $where[] = ['goods_spec_id',$goods_spec_id];
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+ //查询
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+ $shopping_info = Shopping::where($where)->select(['id', 'goods_id', 'number'])->first();
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+
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+ //商品不是无限库存,判断库存是否足够
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+ if ($goods->{'is_infinite'} != 1){
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+ if ($goods->{'stock'} < $total_number){
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+ return ['code' => 0, 'msg' => '商品库存余'.$goods->{'stock'}.'份'];
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+ }
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+ }
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+ if (empty($shopping_info)) {
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+ if ($number <= 0){
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+ return ['code' => 0, 'msg' => '请选择数量'];
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+ }
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+
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+ //入库
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+ $shopping = Shopping::create([
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+ 'm_id' => $m_id,
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+ 'type' => 1,
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+ 'shop_id' => $shop_id,
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+ 'category_id' => $category_id,
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+ 'goods_id' => $goods_id,
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+ 'goods_spec_id' => $goods_spec_id,
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+ 'number' => $number,
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+ ]);
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+
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+ }else{
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+ if ($number <= 0){//数量为0直接删除
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+ $shopping = Shopping::where('id',$shopping_info->{'id'})->delete();
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+ }else{
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+ $shopping = Shopping::where('id',$shopping_info->{'id'})->update(['number' => $number]);
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+ }
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+ }
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+
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+ if (empty($shopping)){
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+ return ['code' => 0, 'msg' => '添加失败'];
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+ }
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+
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+ return ['code' => 1, 'msg' => '添加成功'];
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+ }
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+
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+
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+ /**
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+ * 删除购物车
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+ * @param $m_id
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+ * @param $shop_id
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+ * @return array
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+ */
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+ function delShopping($m_id,$shop_id)
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+ {
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+ //删除数据
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+ $where = [['m_id',$m_id], ['shop_id',$shop_id]];
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+
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+ $res = Shopping::where($where)->delete();
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+
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+ if (empty($res)){
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+ return ['code' => 0, 'msg' => '删除失败'];
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+ }
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+
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+ return ['code' => 1, 'msg' => '删除成功'];
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+ }
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+
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+}
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