使用 rowspan 对分层数据进行分组 [英] Use of rowspan to group hierarchical data

问题描述

是否可以对数据进行分组(使用 rowspan 如此处) 在用 angularjs 呈现的表格中.数据是分层的，state有很多counties，每个counties有多个zipcodes.我想要一个只有州、县、邮编等列的表格(因此请为集合的长度提供一个行跨度).我不确定 ng-repeat-start 和 ng-repeat-end 是否可以用来实现这一点.请在此处

Is it possible to group data (using rowspan as explained here) in a table rendered with angularjs. Data is hierarchical, with state having many counties and each counties has multiple zipcodes. I want a table with only column for state, county, zip etc (so give a rowspan for length of the collection). I am not sure ng-repeat-start and ng-repeat-end can be used to achieve this. Please see the starter template here

 <table>
    <thead>
      <tr>
        <th>State</th>
        <th>County</th>
        <th>Zip</th>
      </tr>
    </thead>
    <tbody>
      <tr ng-repeat='st in states'>
        <td>{{st.name}}</td>
        <td></td>
        <td></td>
      </tr>
    </tbody>
  </table>

数据

 var oh_counties = [
    {name: "Franklin", zips: [111,222,333,444,555]},
    {name: "Adams", zips: [111,222,333,444]},
    {name: "Allen", zips: [111,222,333]}
    ],
    wi_counties = [
    {name: "Dane", zips: [111]},
    {name: "Adams", zips: [111,222,333,444]}
    ]

    $scope.states = [
      {name: "OH", counties: oh_counties},
      {name: "WI", counties: wi_counties},
      ];

所需输出的手工版本在这里http://plnkr.co/edit/T7toND0odx6qr8MVC121?p=preview

推荐答案

这是 Holly Cummins 答案的变体.使用 ng-repeat-start 和 ng-repeat-end 将重复移入 tr 以防止 tbody> 避免重复.也使用了稍微不同的方法来隐藏第一行.

This is a variant of Holly Cummins' answer. The repeat is moved into the tr with ng-repeat-start and ng-repeat-end to prevent the tbody from being repeated. Also uses a slightly different method to hide the first row.

<tbody>
    <tr ng-repeat-start='st in states'>
      <th rowspan="{{st.counties.length}}">{{st.name}}</th>
      <td>{{st.counties[0].name}}</td>
    </tr>
    <tr ng-repeat-end ng-repeat='county in st.counties' ng-hide="$first">
       <td>{{county.name}}</td>
    </tr>
</tbody>

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