修复updatedGoods未定义错误并实现按createdAt降序排序

pages/index/index.js

@@ -443,7 +443,7 @@ Page({
       page: 1,
       soldOutPage: 1,
       hasMoreData: true,
-      goods: existingGoods,
+      goods: [], // 下拉刷新时清空商品数组，避免旧数据影响排序
       filteredGoods: [],
       // 清除缓存以确保获取最新数据
       categoryQueryCache: {},
@@ -829,10 +829,12 @@ Page({
     const existingIds = new Set(existingGoods.map(item => item.id));
     const uniqueNewGoods = newGoods.filter(item => !existingIds.has(item.id));
 
-    // 合并现有商品和去重后的新商品
-    const updatedGoods = [...existingGoods, ...uniqueNewGoods]
-
-    const filteredGoods = this.applyFilters(updatedGoods, false)
+    // 先将现有商品和新商品合并，然后重新处理整个数据集
+    // 这样可以确保所有商品都经过相同的排序规则处理
+    const combinedGoods = [...existingGoods, ...uniqueNewGoods]
+    
+    // 对合并后的完整数据进行过滤和排序
+    const filteredGoods = this.applyFilters(combinedGoods, false)
     const groupedGoods = this.groupGoodsForStaggeredLayout(filteredGoods);
 
     const currentCategory = this.data.selectedCategory === '全部' ? '' : this.data.selectedCategory;
@@ -840,7 +842,7 @@ Page({
     const cacheKey = `${currentCategory}_${currentKeyword}`;
 
     this.setData({
-      goods: updatedGoods,
+      goods: combinedGoods,
       filteredGoods: filteredGoods,
       groupedGoods: groupedGoods,
       loadingMore: false,
@@ -852,7 +854,7 @@ Page({
 
     // 更新分类查询缓存
     const newCategoryQueryCache = { ...this.data.categoryQueryCache };
-    newCategoryQueryCache[cacheKey] = updatedGoods;
+    newCategoryQueryCache[cacheKey] = combinedGoods;
     this.setData({
       categoryQueryCache: newCategoryQueryCache
     })
@@ -1382,24 +1384,16 @@ Page({
         }
       })
       
-      // Define the sorting function for existing criteria
-      const sortByExistingCriteria = (a, b) => {
-        const reservedCountA = a.reservedCount || 0
-        const reservedCountB = b.reservedCount || 0
-        if (reservedCountB !== reservedCountA) return reservedCountB - reservedCountA
-
-        const priceA = parseFloat(a.price || 0)
-        const priceB = parseFloat(b.price || 0)
-        if (!isNaN(priceB) && !isNaN(priceA) && priceA !== priceB) return priceA - priceB
-
+      // Define the sorting function: only by createdAt descending order
+      const sortByCreatedAtDesc = (a, b) => {
         const createdAtA = new Date(a.createdAt || 0).getTime()
         const createdAtB = new Date(b.createdAt || 0).getTime()
         return createdAtB - createdAtA
       }
       
-      // Sort each group by existing criteria
-      publishedItems.sort(sortByExistingCriteria)
-      soldOutItems.sort(sortByExistingCriteria)
+      // Sort each group by createdAt descending
+      publishedItems.sort(sortByCreatedAtDesc)
+      soldOutItems.sort(sortByCreatedAtDesc)
       
       // Combine groups: all published first, then all sold_out
       filtered = [...publishedItems, ...soldOutItems]