chore:按钮 = 全局所有有商品的二级分类（去重，一直显示），选中状态在切换一级分类时保持

商品 = 切换一级分类时，用选中按钮的名称在当前一级分类下找同名 category，重新加载该 category 的商品

components-diy/diy-category-item.vue

@@ -340,6 +340,10 @@ export default {
 		lastSecondCategoryName: {
 			type: String,
 			default: ''
+		},
+		currentOneCategory: {
+			type: Object,
+			default: null
 		}
 	},
 	mixins: [DiyMinx],
@@ -379,7 +383,8 @@ export default {
 			}
 			this.selectedSecondCategory = targetCategory.category_id;
 			this.secondCategoryGoodsList = [];
-			this.getSecondCategoryGoods(targetCategory.category_id);
+			// 用当前一级分类下同名二级分类的 id 查商品(而非全局按钮的 id)
+			this.refreshGoodsByCurrentCategory();
 		}
 	},
 	mounted() {
@@ -440,9 +445,18 @@ export default {
 				}
 				this.selectedSecondCategory = targetCategory.category_id;
 				this.secondCategoryGoodsList = [];
-				this.getSecondCategoryGoods(targetCategory.category_id);
+				this.refreshGoodsByCurrentCategory();
 			}
 		},
+		// 切换一级分类时, 根据当前一级分类下同名二级分类重新加载商品
+		currentOneCategory: {
+			handler() {
+				if (this.value.template == 99 && parseInt(this.value.level) == 2) {
+					this.refreshGoodsByCurrentCategory();
+				}
+			},
+			deep: true
+		},
 		'globalStoreInfo.store_id': {
 			handler(nval, oval) {
 				if (nval != oval) {
@@ -821,6 +835,35 @@ export default {
 			if (!link) return;
 			this.$util.diyRedirectTo(JSON.parse(link));
 		},
+		/**
+		 * 根据当前一级分类(currentOneCategory)下与选中按钮同名的二级分类, 加载对应商品
+		 * 按钮是全局去重的(选中状态用全局 category_id), 但商品只显示当前一级分类下的
+		 * 当前一级分类下若没有同名二级分类, 则商品清空(按钮保持选中)
+		 */
+		refreshGoodsByCurrentCategory() {
+			if (this.selectedSecondCategory == null) {
+				this.secondCategoryGoodsList = [];
+				return;
+			}
+			// 取当前选中按钮的名称
+			const cur = (this.category.child_list || []).find(c => c.category_id === this.selectedSecondCategory);
+			if (!cur) {
+				this.secondCategoryGoodsList = [];
+				return;
+			}
+			const one = this.currentOneCategory;
+			if (!one || !one.child_list || one.child_list.length === 0) {
+				this.secondCategoryGoodsList = [];
+				return;
+			}
+			const match = one.child_list.find(c => c.category_name === cur.category_name);
+			if (match) {
+				this.getSecondCategoryGoods(match.category_id);
+			} else {
+				// 当前一级分类下没有该二级分类, 商品清空(按钮仍保持选中)
+				this.secondCategoryGoodsList = [];
+			}
+		},
 		selectSecondCategory(category) {
 			if (this.selectedSecondCategory === category.category_id) {
 				this.selectedSecondCategory = null;
@@ -828,8 +871,9 @@ export default {
 			} else {
 				this.selectedSecondCategory = category.category_id;
 				this.secondCategoryGoodsList = [];
-				this.getSecondCategoryGoods(category.category_id);
 				this.$emit('saveSecondCategory', category.category_name);
+				// 用当前一级分类下同名 category_id 查商品
+				this.refreshGoodsByCurrentCategory();
 			}
 		},
 		getSecondCategoryGoods(categoryId) {

components-diy/diy-category.vue

@@ -92,7 +92,19 @@
 				</scroll-view>
 
 				<view class="right-flex-wrap">
-					<scroll-view scroll-y="true" class="content-wrap" v-if="value.template == 1 || value.template == 99 || loadType == 'all'"
+					<!-- 模板99 + 二级分类: 全局二级分类按钮(去重, 一直显示) + 商品列表 -->
+					<scroll-view scroll-y="true" class="content-wrap" v-if="value.template == 99 && parseInt(value.level) == 2 && template99Category"
+						:refresher-enabled="true" refresher-default-style="none"
+						:refresher-triggered="triggered" @refresherrefresh="onRefresh" @refresherrestore="onRestore">
+						<diy-category-item :category="template99Category" :value="value" ref="categoryItem" :index="0" :select="0"
+							:oneCategorySelect="oneCategorySelect" :isList="isList"
+							:currentOneCategory="categoryTree && categoryTree[select] ? categoryTree[select] : null"
+							:lastSecondCategoryName="lastSecondCategoryName"
+							@tologin="toLogin" @selectsku="selectSku($event, 0)" @addCart="addCartPoint"
+							@saveSecondCategory="saveSecondCategoryName"></diy-category-item>
+					</scroll-view>
+
+					<scroll-view scroll-y="true" class="content-wrap" v-else-if="value.template == 1 || value.template == 99 || loadType == 'all'"
 						ref="contentWrap" :scroll-into-view="categoryId" :scroll-with-animation="true"
 						@scroll="listenScroll" @touchstart="touchStart" :refresher-enabled="true"
 						refresher-default-style="none" :refresher-triggered="triggered" @refresherrefresh="onRefresh"
@@ -196,7 +208,8 @@ export default {
 			templateFourData: [],
 			isList: false,
 			lang: uni.getStorageSync("lang"),
-			lastSecondCategoryName: ''
+			lastSecondCategoryName: '',
+			template99Category: null
 		};
 	},
 	created() {
@@ -363,10 +376,77 @@ export default {
 								return item;
 							});
 						}
+						// 模板99 + 二级分类: 全局查询所有有商品的二级分类(去重), 按钮一直显示
+						if (this.value.template == 99 && parseInt(this.value.level) == 2) {
+							this.loadGlobalSecondCategoryBtns();
+						}
 					}
 				}
 			});
 		},
+		/**
+		 * 全局查询所有有商品的二级分类, 按名称去重, 汇总成虚拟分类供 template99 渲染按钮
+		 * 只要任何商品属于该二级分类, 按钮就显示; 切换一级分类时按钮不变(一直显示)
+		 * 新增的二级分类只要有商品也会自动包含
+		 */
+		loadGlobalSecondCategoryBtns() {
+			if (!this.categoryTree || !this.categoryTree.length) {
+				this.template99Category = { category_name: '', child_list: [] };
+				return;
+			}
+			// 收集所有二级分类(保留原始顺序, 不去重, 查询所有同名后再去重)
+			const allSecond = [];
+			this.categoryTree.forEach(one => {
+				if (one.child_list && one.child_list.length) {
+					one.child_list.forEach(two => {
+						allSecond.push(Object.assign({ _origIndex: allSecond.length }, two));
+					});
+				}
+			});
+			if (!allSecond.length) {
+				this.template99Category = { category_name: '', child_list: [] };
+				return;
+			}
+			let pending = allSecond.length;
+			const results = [];
+			const finishOne = () => {
+				pending--;
+				if (pending <= 0) {
+					results.sort((a, b) => a._origIndex - b._origIndex);
+					// 按名称去重, 同名只保留第一个有商品的(只要任一同名有商品就显示)
+					const deduped = [];
+					const seenNames = {};
+					results.forEach(item => {
+						if (!seenNames[item.category_name]) {
+							seenNames[item.category_name] = true;
+							deduped.push(item);
+						}
+					});
+					this.template99Category = {
+						category_name: '',
+						child_list: deduped
+					};
+				}
+			};
+			allSecond.forEach(two => {
+				this.$api.sendRequest({
+					url: '/api/goodssku/pageByCategory',
+					data: {
+						category_id: two.category_id,
+						page: 1,
+						page_size: 1
+					},
+					success: res => {
+						if (res && res.code == 0 && res.data && res.data.list && res.data.list.length > 0) {
+							results.push(two);
+						}
+					},
+					complete: () => {
+						finishOne();
+					}
+				});
+			});
+		},
 		/**
 		 * 切换一级分类
 		 * @param {Object} index