列转树--聪明一点的方法

<template>
  <div class="tree">
    <pre>{{ filterTreeFirst }}</pre>
  </div>
</template>

<script>
import treeData from "../../testData";
import enumerable from "linq";

export default {
  name: "Tree",
  data() {
    return {
      filterTreeFirst: [],
      filterTreeSecond: []
    }
  },
  created() {
    this.filterTreeFirst = enumerable.from(treeData).where(item => item.Pid == undefined
        || item.Pid == '' || item.Pid == null).select(para => ({
      Id: para.Id,
      Name: para.Name,
      children: enumerable.from(treeData).where(iii => iii.Pid == para.Id).select(mmm => ({
        Id: mmm.Id,
        Pid: mmm.Pid,
        Name: mmm.Name,
        children: enumerable.from(treeData).where(third=>third.Pid==mmm.Id).select(thirdItem=>({
          Id:thirdItem.Id,
          Pid:thirdItem.Pid,
          Name:thirdItem.Name
        })).toArray()
      })).toArray()
    })).toArray()


  }
}
</script>

<style scoped>

</style>


Id: "LogType"
Value: "Operate"