将扁平化的数组还原成树

///将扁平化之后的数组还原成树
  buildTree = (list) => {
    let dataArray = [];
    list.forEach(item=>{
      if(item._parent_path ===''){
        dataArray.push(item);
      }
    });
    return this.data2treeDG(list, dataArray);
  };
  data2treeDG(datas, dataArray){
    dataArray.forEach(item=>{
      let childrenArray = [];
      let CATL_CODEP = item._path;
      datas.forEach(items=>{
        let data = items;
        let CATL_PARENT = data._parent_path;
        if(CATL_CODEP===CATL_PARENT){
          childrenArray.push(items);
        }
      });
      item.children = childrenArray;
      if(childrenArray.length > 0) {//有儿子节点则递归
        this.data2treeDG(datas, childrenArray);
      }
    });
    return dataArray;
  }
};