smart-canteen/commpents/history/index.wxml

<view class="main">
  <view class="list" wx:key="item" wx:for="{{list}}" bindtap="detail" data-id="{{item.id}}">
    <view class="top">
      <text>{{item.name}}</text>
      <text>{{item.reserve}}大卡</text>
      <text>{{item.num}}份</text>
    </view>
    <view class="down">
      <text wx:key="tag" wx:for="{{item.children}}" wx:for-item="tag">{{tag.title}},</text>
    </view>
  </view>
</view>