2023-5-23解决根据表单字符串逗号切割成元素，然后获取元素的其它信息，修改和删除，点击保存保存到表格中

<template>
  <div>
    <el-table :data="tableData" style="width: 100%;">
      <el-table-column label="操作">
        <template slot-scope="scope">
          <el-button v-if="scope.row.st === '1'" type="primary" @click="handleEdit(scope.row)">编辑</el-button>
          <el-button v-else type="success" @click="handleView(scope.row)">查看</el-button>
        </template>
      </el-table-column>
      <el-table-column prop="edit" label="编辑人"></el-table-column>
      <el-table-column prop="userlist" label="用户列表"></el-table-column>
    </el-table>

    <el-dialog title="编辑用户" :visible.sync="editDialogVisible">
      <el-table :data="editTableData" style="width: 100%;">
        <el-table-column prop="name" label="姓名">
          <template slot-scope="scope">
            <el-select v-model="scope.row.name" placeholder="请选择" @change="handleNameChange(scope.row)">
              <el-option v-for="item in userList" :key="item.label" :label="item.label" :value="item.value"></el-option>
            </el-select>
          </template>
        </el-table-column>
        <el-table-column prop="age" label="年龄"></el-table-column>
        <el-table-column prop="permission" label="权限"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="text" size="small" @click="handleDelete(scope.$index)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>

      <div style="margin-top: 20px;">
        <el-button type="primary" @click="handleAdd">新增</el-button>
        <el-button type="success" @click="handleSave">保存</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      tableData: [
        { st: '1', edit: '张三', userlist: '张三,李四,王五', createuser: '张三', date: '2023-05-20' },
        { st: '2', edit: '李四', userlist: 'aaa,bbb,ccc', createuser: '李四', date: '2023-05-21' },
        { st: '1', edit: '王五', userlist: 'ddd,eee,fff', createuser: '王五', date: '2023-05-22' }
      ],
      editDialogVisible: false,
      editTableData: [],
      userList: [
        { label: '张三', value: '张三', age: '25', permission: '管理员' },
        { label: '李四', value: '李四', age: '30', permission: '普通员工' },
        { label: '王五', value: '王五', age: '28', permission: '普通员工' }
      ],
      currentIndex: null
    }
  },
  methods: {
    handleEdit(row) {
      // 打开编辑弹出层
      this.editDialogVisible = true

      // 根据userlist字符串切割生成表格数据
      const userList = row.userlist.split(',')
      this.editTableData = userList.map(name => {
        const item = this.userList.find(user => user.label === name)
        return {
          name: item.label,
          age: item.age,
          permission: item.permission
        }
      })

      // 保存当前编辑的行索引
      this.currentIndex = this.tableData.indexOf(row)
    },
    handleView(row) {
      // 打开查看弹出层
      this.editDialogVisible = true

      // 根据userlist字符串切割生成表格数据
      const userList = row.userlist.split(',')
      this.editTableData = userList.map(name => {
        const item = this.userList.find(user => user.label === name)
        return {
          name: item.label,
          age: item.age,
          permission: item.permission
        }
      })

      // 禁用编辑和删除按钮
      this.editTableData.forEach(item => {
        item.disabled = true
      })
    },
    handleNameChange(row) {
      // 根据选择的姓名更新行数据
      const item = this.userList.find(user => user.value === row.name)
      row.age = item.age
      row.permission = item.permission
    },
    handleAdd() {
      // 新增一行数据
      this.editTableData.push({
        name: '',
        age: '',
        permission: ''
      })
    },
    handleDelete(index) {
      // 删除一行数据
      this.editTableData.splice(index, 1)
    },
    handleSave() {
      // 保存修改后的userlist到表格中
      const userlist = this.editTableData.map(item => item.name).join(',')
      this.tableData[this.currentIndex].userlist = userlist
      this.editDialogVisible = false
    }
  }
}
</script>