修改价格显示

src/views/goods-detail.vue

@@ -59,7 +59,7 @@
     <div class="btn-box">
       <div class="money">
         <p>合计：<span class="yuan">￥{{ totalPrice.yuan }}</span><span class="fen">.{{ totalPrice.fen }}</span><span v-if="goods.hasDiscount" class="del">原价: ¥{{ totalPrice.costPriceText }}</span></p>
-        <p v-if="goods.couponAmountText" class="coupon">已使用优惠券，为您再优惠{{ goods.couponAmountText }}元</p>
+        <p v-if="totalPrice.savePrice" class="coupon">已使用优惠券，为您再优惠{{ totalPrice.savePrice }}元</p>
       </div>
       <div
         class="btn"
@@ -173,9 +173,17 @@ export default {
           goods.salePrice = this.formatPrice(price);
           goods.costPriceText = (goods.costPrice / 100).toFixed(2);
           goods.hasDiscount = !!(goods.couponPrice || goods.preferentialPrice);
-          if (goods.couponDTO) {
-            goods.couponAmountText = (goods.couponDTO.discountAmount / 100).toFixed(2);
+          let savePrice = 0;
+          if (goods.couponPrice) {
+            if (goods.preferentialPrice) {
+              savePrice = ((goods.preferentialPrice - goods.couponPrice) / 100).toFixed(2)
+            } else {
+              savePrice = ((goods.costPrice - goods.couponPrice) / 100).toFixed(2)
+            }
           }
+          // if (goods.couponDTO) {
+          //   goods.couponAmountText = (goods.couponDTO.discountAmount / 100).toFixed(2);
+          // }
           if (goods.goodsDescWhere) {
             tabs.push({ name: '使用范围', detail: goods.goodsDescWhere })
           }
@@ -189,7 +197,8 @@ export default {
             ...goods.salePrice,
             preferentialPrice: goods.preferentialPrice,
             costPrice: goods.costPrice,
-            costPriceText: goods.costPriceText
+            costPriceText: goods.costPriceText,
+            savePrice,
           }
           this.goods = goods;
           this.swiperList = res.data && res.data.imgList || [];
@@ -205,12 +214,14 @@ export default {
       const num = this.curtGoodsNum;
       this.GET(`trade/goods/getPrice/${this.goodsId}/${num}`, {}).then(res => {
         if (res.code == "000000") {
-          const { preferentialPrice, totalPrice } = res.data;
+          const { couponPrice, preferentialPrice, costPrice, savePrice } = res.data;
+          let price = couponPrice || preferentialPrice || costPrice;
           this.totalPrice = {
-            ...this.formatPrice(preferentialPrice),
+            ...this.formatPrice(price),
             preferentialPrice,
-            costPrice: totalPrice,
-            costPriceText: (totalPrice / 100).toFixed(2),
+            costPrice: costPrice,
+            costPriceText: (costPrice / 100).toFixed(2),
+            savePrice: savePrice ? (savePrice / 100).toFixed(2) : 0,
           }
           this.goodsNum = num;
         } else if (res.code === "200006") {