preview travel location attach in list

miniprogram/pages/main/travel-detail/index.wxml

@@ -71,12 +71,17 @@
 					class="location"
 					wx:for="{{locations}}"
 					wx:key="id"
-					left-icon="{{locationTypeIcons[item.type]}}"
 					title="{{item.title || '未命名地点'}}"
 					bind:tap="toLocationDetail"
 					data-id="{{item.id}}"
 					arrow
 				>
+					<view slot="left-icon" class="thumb">
+						<image wx:if="{{item.previewThumb}}" class="thumb-img" src="{{item.previewThumb}}" mode="aspectFill" />
+						<view wx:else class="thumb-placeholder">
+							<t-icon name="{{locationTypeIcons[item.type]}}" size="28px" color="var(--theme-wx)" />
+						</view>
+					</view>
 					<view slot="note" class="note">{{locationTypeLabels[item.type]}}</view>
 					<view slot="description" class="description">
 						<view wx:if="{{item.requireIdCard}}" class="item">