diff --git a/beike/Helpers.php b/beike/Helpers.php
index edefacbc..7f21bbe8 100644
--- a/beike/Helpers.php
+++ b/beike/Helpers.php
@@ -456,6 +456,18 @@ function current_currency_code(): string
     return Session::get('currency') ?? system_setting('base.currency');
 }
 
+/**
+ * 获取当前货币
+ *
+ * @return string
+ */
+function current_currency_id(): string
+{
+    $currencyCode = current_currency_code();
+    $currency = \Beike\Models\Currency::query()->where('code', $currencyCode)->first();
+    return $currency->id ?? 0;
+}
+
 /**
  * 数量格式化, 用于商品、订单统计
  *
diff --git a/beike/Shop/Services/CheckoutService.php b/beike/Shop/Services/CheckoutService.php
index a3537592..84a61505 100644
--- a/beike/Shop/Services/CheckoutService.php
+++ b/beike/Shop/Services/CheckoutService.php
@@ -108,6 +108,22 @@ class CheckoutService
     }
 
 
+    /**
+     * 计算当前选中商品总重量
+     * @todo
+     * @return int
+     */
+    public function getCartWeight(): int
+    {
+        $weight = 0;
+        $selectedProducts = $this->selectedProducts;
+        foreach ($selectedProducts as $product) {
+            $weight += $this->weight->convert($product['weight'], $product['weight_class_id'], $this->config->get('config_weight_class_id'));
+        }
+        return $weight;
+    }
+
+
     /**
      * @throws \Exception
      */