修复：图书详情和课程详情无数据问题

pages/course/list/category.vue

@@ -11,7 +11,12 @@
 
     <!-- 子级分类 -->
     <view v-if="selectedTab && selectedTab.children && selectedTab.children.length > 0" class="sub-category-list">
-      <view v-for="child in selectedTab.children" :key="child.id" :class="{'active': child.id === radio_category_id}" class="sub-category-child-item">{{ child.title }}</view>
+      <view
+        v-for="child in selectedTab.children"
+        :key="child.id" :class="{'active': child.id === radio_category_id}"
+         class="sub-category-child-item"
+         @click="changeRadioCategoryId(child.id)"
+        >{{ child.title }}</view>
     </view>
 
     <!-- 课程列表 -->
@@ -86,6 +91,17 @@ const changeCategory = ({ name }: { name: number}) => {
   radio_category_id.value = selectedTab.value && selectedTab.value.children[0] && selectedTab.value.children[0].id || 0
 }
 
+/**
+ * 子级分类切换
+ */
+const changeRadioCategoryId = (id: number) => {
+  radio_category_id.value = id
+  // 重新加载分页数据
+  paging.value && paging.value.reload();
+}
+
+
+
 // 分类下的课程列表
 const courseList = ref<ICourse[]>([]) // 课程列表
 const selectedCategoryId = computed(() => {