修复分类预加载问题，首次加载全部数据

pages/index/index.js

@@ -532,27 +532,46 @@ Page({
     const categories = this.data.categories;
     const selectedCategory = this.data.selectedCategory;
     
-    categories.forEach(cat => {
-      if (cat === '全部') {
-        categorizedGoods[cat] = updatedGoods;
-      } else if (cat === selectedCategory) {
-        categorizedGoods[cat] = updatedGoods.filter(item => item.isAd || !item.category || item.category === cat);
-      } else {
-        categorizedGoods[cat] = [];
-      }
-    });
+    // 如果是首次加载全部数据，需要把返回的所有数据按实际分类存储
+    if (selectedCategory === '全部' && !isLoadMore) {
+      categories.forEach(cat => {
+        if (cat === '全部') {
+          categorizedGoods[cat] = updatedGoods;
+        } else {
+          categorizedGoods[cat] = updatedGoods.filter(item => item.isAd || item.category === cat);
+        }
+      });
+    } else {
+      // 只更新当前选中的分类
+      categories.forEach(cat => {
+        if (cat === '全部') {
+          categorizedGoods[cat] = updatedGoods;
+        } else if (cat === selectedCategory) {
+          categorizedGoods[cat] = updatedGoods.filter(item => item.isAd || !item.category || item.category === cat);
+        }
+      });
+    }
     
     // 应用地区筛选后的分类数据
     const filteredByRegion = this.applyRegionFilter(updatedGoods);
-    categories.forEach(cat => {
-      if (cat !== '全部') {
-        if (cat === selectedCategory) {
-          categorizedGoods[cat + '_filtered'] = filteredByRegion.filter(item => item.isAd || !item.category || item.category === cat);
-        } else {
-          categorizedGoods[cat + '_filtered'] = [];
+    
+    if (selectedCategory === '全部' && !isLoadMore) {
+      categories.forEach(cat => {
+        if (cat !== '全部') {
+          categorizedGoods[cat + '_filtered'] = filteredByRegion.filter(item => item.isAd || item.category === cat);
         }
-      }
-    });
+      });
+    } else {
+      categories.forEach(cat => {
+        if (cat !== '全部') {
+          if (cat === selectedCategory) {
+            categorizedGoods[cat + '_filtered'] = filteredByRegion.filter(item => item.isAd || !item.category || item.category === cat);
+          } else {
+            categorizedGoods[cat + '_filtered'] = [];
+          }
+        }
+      });
+    }
     
     // 根据当前选中的分类和地区筛选获取商品
     let filteredGoods;
@@ -719,13 +738,16 @@ Page({
     const timestamp = new Date().getTime();
     const currentPage = isLoadMore ? this.data.page : 1
     
+    // 首次加载时获取全部数据，在本地进行分类
+    const shouldLoadAll = !isLoadMore && this.data.selectedCategory === '全部';
+    
     API.getProductList('published', {
       timestamp: timestamp,
       viewMode: 'shopping',
       page: currentPage,
       pageSize: this.data.pageSize,
       keyword: this.data.searchKeyword,
-      category: this.data.selectedCategory === '全部' ? '' : this.data.selectedCategory
+      category: shouldLoadAll ? '' : this.data.selectedCategory
     })
     .then(res => {
       wx.hideLoading();