fix: 折扣页无定位缓存时主动获取定位，保证商铺距离展示

pages/discount/discount.vue

@@ -56,14 +56,21 @@ export default {
 		}
 	},
 	onLoad() {
-		const loc = uni.getStorageSync('lng') && uni.getStorageSync('lat')
+		const hasLoc = uni.getStorageSync('lng') && uni.getStorageSync('lat')
-			? { lng: uni.getStorageSync('lng'), lat: uni.getStorageSync('lat') }
+		if (hasLoc) {
-			: null
+			this.lng = uni.getStorageSync('lng')
-		if (loc) {
+			this.lat = uni.getStorageSync('lat')
-			this.lng = loc.lng
-			this.lat = loc.lat
-		}
 			this.loadList()
+		} else {
+			// xuchao: 定位仅在首页触发过，直接进本页无缓存时主动获取一次，保证距离列可展示
+			import('@/common/location.js').then(module => module.default.getLocation())
+				.then(({ lng, lat }) => {
+					this.lng = lng
+					this.lat = lat
+				})
+				.catch(() => {})
+				.finally(() => this.loadList())
+		}
 	},
 	methods: {
 		loadList() {