修复结算页中价格为0时不显示为0.00的bug

Code Review By Rock Zhang

@@ -186,11 +186,12 @@ class Helpers
      * 转换价格
      *
      * @param float|string $price 价格
+     * @param boolean $isSepcialZero 是否需要特殊的0，默认否
      * @return float|string 转换之后的价格
      */
-    public static function transPrice($price)
+    public static function transPrice($price, $isSepcialZero = false)
     {
-        return !empty($price) ? number_format($price, 2, '.', '') : 0;
+        return (!empty($price) || $isSepcialZero) ? number_format($price, 2, '.', '') : 0;
     }
 
     /**

@@ -518,7 +518,7 @@ class CartModel
             if (isset($payReturn['shopping_cart_data']) && !empty($payReturn['shopping_cart_data'])) {
                 $result['cartPayData'] = isset($orderCompute['promotion_formula_list']) ? $orderCompute['promotion_formula_list'] : $payReturn['shopping_cart_data']['promotion_formula_list'];
                 $price = isset($orderCompute['last_order_amount']) ? $orderCompute['last_order_amount'] : $payReturn['shopping_cart_data']['last_order_amount'];
-                $result['price'] = Helpers::transPrice($price);
+                $result['price'] = Helpers::transPrice($price, true);
                 // 订单商品数
                 $result['num'] = $payReturn['shopping_cart_data']['selected_goods_count'];
                 // 商品金额