title: How to display list of data in a column in iview table
body: <p>In iview table, my colums：</p>
  <pre><code>  export default {
      data () {
        return {
          columns5: [
            {
              title: 'CNAME',
              key: 'name',
              sortable: true
            },
            {
              title: 'nodes',
              key: 'nodes',
            },
            {
              title: 'domains',
              key: 'domains',
            },
            {
              title: 'desc',
              key: 'desc'
            },
            {
              title: 'duetime',
              key: 'duetime',
              sortable: true
            },
            {
              title: 'ctime',
              key: 'ctime',
              sortable: true
            },
            {
              title: 'uptime',
              key: 'uptime',
              sortable: true
            },
          ],
  </code></pre>
  <p>the data:</p>
  <pre><code>  anames:[
      {
          &quot;id&quot;: 1,
          &quot;nodes&quot;: [
              {
                  &quot;id&quot;: 1,
                  &quot;main_ip&quot;: &quot;10.10.10.10&quot;,
                  &quot;ips&quot;: &quot;10.10.10.10\r\n10.10.10.11&quot;,
                  &quot;req_secret&quot;: null,
                  &quot;ctime&quot;: &quot;2021-05-17T09:41:53.159131+08:00&quot;,
                  &quot;uptime&quot;: &quot;2021-05-17T10:31:47.886033+08:00&quot;,
                  &quot;cname&quot;: 1
              }
          ],
          &quot;domains&quot;: [
              {
                  &quot;id&quot;: 1,
                  &quot;domain_name&quot;: &quot;baidu.com&quot;,
                  &quot;ctime&quot;: &quot;2021-05-17T16:19:18.097807+08:00&quot;,
                  &quot;uptime&quot;: &quot;2021-05-17T16:19:18.097955+08:00&quot;,
                  &quot;cname&quot;: 1
              }
          ],
          &quot;name&quot;: &quot;masdcom&quot;,
          &quot;desc&quot;: &quot;&quot;,
          &quot;desc_en&quot;: null,
          &quot;is_active&quot;: true,
          &quot;duetime&quot;: &quot;2021-06-17T19:40:00+08:00&quot;,
          &quot;ctime&quot;: &quot;2021-05-17T09:13:57.019125+08:00&quot;,
          &quot;uptime&quot;: &quot;2021-05-17T19:42:23.025122+08:00&quot;,
          &quot;user&quot;: 2
      }
  ]
  
  </code></pre>
  <p>You see my nodes and domains，in data <code>anames</code> they are list, not just key-value, how can I display domain's domain_name and node's main_ip?</p>
  <p>In there can not use <code>domains.domain_name</code> and <code>nodes.main_ip</code>.</p>
  <p><a href="https://i.stack.imgur.com/spPH8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/spPH8.png" alt="enter image description here" /></a></p>
  <p>I want nodes display all node's main_ip  and domains display all domain's domain_name. what should I do in columns?</p>