修复多商户2.1版本下单时,平台优惠券优惠金额计算错误问题

1. 打开app/common/repositories/store/order/StoreOrderCreateRepository.php文件找到705行

2. 替换截图区域内容为下方代码

        if (isset($platformCouponRate)) {
            $_coupon_price = $platformCouponRate['coupon_price'];
            foreach ($merchantCartList as &$merchantCart) {
                $_ids = array_column($merchantCart['list'], 'cart_id');
                usort($merchantCart['list'], function ($a, $b) {
                    return $a['true_price'] > $b['true_price'] ? 1 : -1;
                });
                $_price = 0;
                foreach ($merchantCart['list'] as &$cart) {
                    if ($cart['true_price'] <= 0 || !$platformCouponRate['check']($cart)) continue;

                    if ($platformCouponRate['use_count'] === 1) {
                        $couponPrice = min($platformCouponRate['coupon_price'], $cart['true_price']);
                    } else {
                        $couponPrice = min(max(0.01, bcmul($_coupon_price, bcdiv($cart['true_price'], $platformCouponRate['price'], 6), 2)), $cart['true_price']);
                    }
                    $platformCouponRate['coupon_price'] = bcsub($platformCouponRate['coupon_price'], $couponPrice, 2);
                    $cart['true_price'] = bcsub($cart['true_price'], $couponPrice, 2);
                    $cart['platform_coupon_price'] = $couponPrice;
                    $platformCouponRate['use_count']--;
                    $_price = bcadd($couponPrice, $_price, 2);
                }
                unset($cart);
                $merchantCart['order']['platform_coupon_price'] = $_price;
                $merchantCart['order']['true_price'] = bcsub($merchantCart['order']['true_price'], $_price, 2);
                $total_platform_coupon_price = bcadd($total_platform_coupon_price, $_price, 2);
                usort($merchantCart['list'], function ($a, $b) use ($_ids) {
                    return array_search($a['cart_id'], $_ids) > array_search($b['cart_id'], $_ids) ? 1 : -1;
                });
            }
            $usePlatformCouponId = $platformCouponRate['id'];
            unset($merchantCart);
        }

3. 重启swoole服务