实现el-table的拖拽

项目中要求可以拖拽element UI table 的表格

1、使用 sortablejs 插件

npm install sortablejs --save

2、引入

import Sortable from "sortablejs";

3、直接上代码

<template>
  <div class="table">
    <el-table
      ref="dragTable"
      :data="tableData"
      border
      :row-class-name="tableRowClassName"
    >
      <el-table-column prop="date" label="日期"></el-table-column>
      <el-table-column prop="name" label="姓名"></el-table-column>
      <el-table-column prop="address" label="地址"></el-table-column>
      <el-table-column label="操作">
        <template>
          <el-button class="move" type="text" size="small">拖 拽</el-button>
        </template>
      </el-table-column>
    </el-table>
  </div>
</template>
<script>
import Sortable from "sortablejs";
export default {
  data() {
    return {
      tableData: [
        {
          id: "1",
          name: "text_1",
          date: "1111-11-11",
          address: "测试_1",
        },
        {
          id: "2",
          name: "text_2_不可拖拽",
          date: "2222-22-22",
          address: "测试_2_不可拖拽",
          disabled: true,
        },
        {
          id: "3",
          name: "text_3",
          date: "3333-33-33",
          address: "测试_3",
        },
        {
          id: "4",
          name: "text_4",
          date: "4444-44-44",
          address: "测试_4",
        },
        {
          id: "5",
          name: "text_5",
          date: "5555-55-55",
          address: "测试_5",
        },
      ],
    };
  },
  methods: {
    // 创建sortable实例
    initSortable() {
      // 获取表格row的父节点
      const ele = this.$refs.dragTable.$el.querySelector(
        ".el-table__body > tbody"
      );
      // 创建拖拽实例
      let dragTable = Sortable.create(ele, {
        animation: 150, //动画
        disabled: false, // 拖拽不可用? false 启用（刚刚渲染表格的时候起作用，后面不起作用）
        handle: ".move", //指定拖拽目标，点击此目标才可拖拽元素(此例中设置操作按钮拖拽)
        filter: ".disabled", //指定不可拖动的类名（el-table中可通过row-class-name设置行的class）
        dragClass: "dragClass", //设置拖拽样式类名
        ghostClass: "ghostClass", //设置拖拽停靠样式类名
        chosenClass: "chosenClass", //设置选中样式类名
        // 开始拖动事件
        onStart: () => {
          console.log("开始拖动");
        },
        // 结束拖动事件
        onEnd: ({ newIndex, oldIndex }) => {
          console.log(
            "结束拖动",
            `拖动前索引${oldIndex}---拖动后索引${newIndex}`
          );
            const currRow = _this.tableData.splice(oldIndex, 1)[0];
          this.tableData.splice(newIndex, 0, currRow);
        },
      });
    },
    // 设置表格row的class
    tableRowClassName({ row }) {
      if (row.disabled) {
        return "disabled";
      }
      return "";
    },
  },
  mounted() {
    this.initSortable();
  },
};
</script>
//注意如果加上scoped 样式就可能不起作用
<style lang='scss'>
// 拖拽
.dragClass {
  background: rgba($color: #41c21a, $alpha: 0.5) !important;
}
// 停靠
.ghostClass {
  background: rgba($color: #6cacf5, $alpha: 0.5) !important;
}
// 选择
.chosenClass:hover > td {
  background: rgba($color: #f56c6c, $alpha: 0.5) !important;
}
</style>