element table中嵌套el-select 无法选择问题

              <el-table-column align="left" label="姓名" show-overflow-tooltip :key="tableKey">
                <template slot-scope="scope">
                  <el-select placeholder="请选择" :disabled="!saveButton" v-model="scope.row.firemans" @change="changeFiremans" filterable multiple :key="scope.$index" style="width: 100%">
                    <el-option v-for="item in getPostMember(scope.row)" :key="item.memberUuid" :label="item.memberName" :value="item.memberUuid">
                    </el-option>
                  </el-select>
                </template>
              </el-table-column>

需要在el-table-column上添加:key="tableKey"

tableKey

  data () {
    return {
        tableKey: Math.random()
    }
  }

el-select添加change事件修改tableKey

changeFiremans() {
      this.tableKey = Math.random()
    }