"element-ui" table How to change empty cells as '-'.

Question

var Main = {
      data() {
        return {
          tableData: [{
            date: '2016-05-03',
            name: 'Tom',
            address: 'No. 189, Grove St, Los Angeles'
          }, {
            date: '2016-05-02',
            name: '',
            address: 'No. 189, Grove St, Los Angeles'
          }, {
            date: '2016-05-04',
            name: '',
            address: 'No. 189, Grove St, Los Angeles'
          }, {
            date: '2016-05-01',
            name: 'Tom',
            address: 'No. 189, Grove St, Los Angeles'
          }]
        }
      }
    }
var Ctor = Vue.extend(Main)
new Ctor().$mount('#app')

@import url("//unpkg.com/element-ui@2.4.11/lib/theme-chalk/index.css");

I know If I use 'template' tag I can convert null data as '-'.
now let's suppose that I have more than 100 tables and I don't know which cells can be null.
putting 'template' to all el-table-columns will be very hard work and inefficient way.
I want to know is there any way that I can change empty cells as '-' at the same time. help me guys jsfiddle

user_7550182 · Answer

<pre><code><template>
<el-table :data="tableData" style="width: 100%">
  <el-table-column prop="date" label="Date" width="180">
  </el-table-column>
  <el-table-column prop="name" label="Name" width="180">
    <template slot-scope="scope">
      
      <div class="cell" v-if="scope.row.name !== null">{{ scope.row.answer }}</div>
      <div v-else class="cell">-</div>
    </template>
  </el-table-column>
  <el-table-column prop="address" label="Address">
  </el-table-column>
</el-table>
</code></pre>

<p></p>

user_3634538 · Answer

I'm sure there are many ways to achieve that. But try this:

computed: {
  items() {
    let data = this.tableData;

    for(let item of data) {
      for(let key in item) {
        if (!item[key]) {
          item[key] = '-';
        }
      }
    }

    return data;
  }
}

"element-ui" table How to change empty cells as '-'.

2 Answers