【element ui系列】分享几种实现el-table表格单选的方法

在实际的开发中，经常会用到从表格中选择一条记录的情况，虽然官方给出的例子，但是给人感觉看起来不明显，于是，在此基础上做了改进。接下来，介绍两种常见的实现方法：

1、采用复选框(checkbox)实现，去掉表头多选框，代码如下：

<template>
  <div class="app-container">
    <el-table
      stripe 
      ref="multipleTable"
      :data="tableData"
      tooltip-effect="dark"
      style="width: 100%"
      class="section-table"
      @row-click="clickRow"
      @selection-change="handleSelectionChange">
      <el-table-column
        type="selection"
        width="55">
      </el-table-column>
      <el-table-column
        label="日期"
        width="120">
        <template slot-scope="scope">{{ scope.row.date }}</template>
      </el-table-column>
      <el-table-column
        prop="name"
        label="姓名"
        width="120">
      </el-table-column>
      <el-table-column
        prop="address"
        label="地址"
        show-overflow-tooltip>
      </el-table-column>
    </el-table>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        tableData: [{
          id: '1',
          date: '2016-05-03',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '2',
          date: '2016-05-02',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '3',
          date: '2016-05-04',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '4',
          date: '2016-05-01',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '5',
          date: '2016-05-08',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '6',
          date: '2016-05-06',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '7',
          date: '2016-05-07',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }],
        selectList: []
      }
    },

    methods: {
      toggleSelection(rows) {
        if (rows) {
          rows.forEach(row => {
            this.$refs.multipleTable.toggleRowSelection(row);
          });
        } else {
          this.$refs.multipleTable.clearSelection();
        }
      },
      handleSelectionChange(val) {
        this.selectList = val;
        // 单选
        if (val.length > 1 ) {
            this.$refs.multipleTable.clearSelection();
            this.$refs.multipleTable.toggleRowSelection(val.pop());
        }
      },
      // 点击一行时选中
      clickRow(row){          
        // 单选选中行
        if (this.selectList[0] == row) {
          // 取消
          this.selectList = [];
          this.$refs.multipleTable.clearSelection();
        } else {
          // 选择
          this.selectList = [row];
          this.$refs.multipleTable.clearSelection();
          this.$refs.multipleTable.toggleRowSelection(row, true);
        }           
        
      },

    }
  }
</script>
<style>
/*  将全选项隐藏 */
.section-table thead .el-table-column--selection .cell {
    display: none;
}

</style>

效果如图：

2、采用单选框(radio)，双击取消选中

<template>
  <div class="app-container">
    <el-table
      ref="singleTable"
      :data="tableData"
      highlight-current-row     
      @row-dblclick="rowClick2"
      @current-change="handleCurrentChange"
      style="width: 100%">
      <el-table-column width="35">
        <template slot-scope="scope">
          <el-radio
              class="radio"
              :label="scope.row"
              v-model="currentRow"             
            >{{""}}</el-radio>
        </template>
      </el-table-column>
      <el-table-column
        property="date"
        label="日期"
        width="120">
      </el-table-column>
      <el-table-column
        property="name"
        label="姓名"
        width="120">
      </el-table-column>
      <el-table-column
        property="address"
        label="地址">
      </el-table-column>
    </el-table>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        tableData: [{
          id: '1',
          date: '2016-05-03',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '2',
          date: '2016-05-02',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '3',
          date: '2016-05-04',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '4',
          date: '2016-05-01',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '5',
          date: '2016-05-08',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '6',
          date: '2016-05-06',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          id: '7',
          date: '2016-05-07',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }],
        currentRow: null
      }
    },

    methods: {
      setCurrent(row) {
        this.$refs.singleTable.setCurrentRow(row);
      },
      handleCurrentChange(row) {
        this.currentRow = row;
      },
      rowClick2(row, column, event) {        
        if (this.currentRow && row.date == this.currentRow.date) { 
          this.setCurrent();
          this.currentRow = null;       
        } else {
          this.currentRow = row;
        }
      },

    }
  }
</script>
<style>

/*  将radio的label隐藏 */
.el-radio__label{
    display: none !important;
  }
</style>

效果如下图：