element-ui tree权限树

在权限中父子集不关联,一开始,我以为default-checked-keys值不对,最后看了文档,原来是check-strictly被开启了

 

          <el-tree
            ref="menu"
            :data="permissionSelectList"
            :default-checked-keys="permissionArr"
            :props="defaultProps"
            show-checkbox
            node-key="permissionId"
          />

 

 首先去掉了,然后父子联动没有问题了,但是,又出现了新的问题,主要病症出现在半选的父节点数据上,接口要求是半选的节点也要提交的,但是点击修改,回显的时候,因为提交了半选的数据,此时,selected是1,勾选的状态,导致回显都是被选中的状态。

修改方案:回显过滤一下数据

1、过滤menu,selected为1,permissionId存在a数组中

// 递归获取  已选择的权限
function getSelectSermissions(list) {
  const selectArr = [];
  function asyncSelect(list) {
    return list.filter((item) => {
      if (item.selected && item.selected === "1") {
        selectArr.push(item.permissionId);
      }
      // 判断是否有子组件
      if (item.children && item.children.length) {
        asyncSelect(item.children);
      }
      return true;
    });
  }
  asyncSelect(list);
  return selectArr;
}

2、过滤menu的children,selected为0,把父节点的ID取出来存在b数组中

function getSelectSermissions2(list) {
  const selectArr = [];
  function asyncSelect(list) {
    return list.filter((item) => {
      if (item.children && item.children.length) {

          let obj = item.children.find(subItem => subItem.selected === '0')
          if(obj){
            selectArr.push(item.permissionId);
          }   
          asyncSelect(item.children);       
      }
      return true;
    });
  }
  asyncSelect(list);
  return selectArr;
}

点击编辑,回显权限树,由于保存的时候,半选的节点也传给后端,回显的时候,select则为1。所以在detailFn事件中添加过滤方法,把子节点为0的父节点删除掉。

   detailFn(roleId) {
      let { permissionTree } = res
//子集中select有0的父级id过滤出来
      let x =  getSelectSermissions2(permissionTree); 
//['100', '100400', '100500']
//树中select为1的过滤出来 let y = getSelectSermissions(permissionTree);
//['100', '100100', '100100100', '100100200', '100100300', '100100400', '100100500', '100100600', '100100700', '100200', '100200100', '100200300', '100300', '100300100', '100300200', '100300300', '100400', '100400100', '100400200', '100400300', '100400400'] console.log(x,y)
// 树中select为1的y数组中删除掉 子集中select有0的父级id this.permissionArr = y.filter(item=>!x.includes(item))
//['100100', '100100100', '100100200', '100100300', '100100400', '100100500', '100100600', '100100700', '100200', '100200100', '100200300', '100300', '100300100', '100300200', '100300300', '100400100', '100400200', '100400300', '100400400']
return true; },

 

 

逻辑是这样的,但是写了两个方法进行过滤,确实繁琐,最终,简化方法如下:

function getSelectSermissions(list) {
  const selectArr = [];
  function asyncSelect(list) {
    return list.filter((item) => {
      if (item.selected && item.selected === "1") {
        selectArr.push(item.permissionId);
      }
      // 判断是否有子组件
      if (item.children && item.children.length) {
          // 查询子节点为0的父节点
          let obj = item.children.find(subItem => subItem.selected === '0')
          if(obj){
       // 通过obj的条件有100,100400,100500
if(selectArr.includes(item.permissionId)){// selectArr确认包含子节点为0的父节点 itme.permissionId的值是否有100,100400,100500 // 数组中删除100,100400 selectArr.splice(selectArr.findIndex(lastItem => lastItem === item.permissionId), 1) } } asyncSelect(item.children); } return true; }); } asyncSelect(list); return selectArr; }

调用

let arr = [{
  permissionId: "100",
  selected: "1",
  children:[{
    permissionId: "100100",
    selected: "1",
  },{
    permissionId: "100200",
    selected: "1",
  },{
    permissionId: "100300",
    selected: "1",
  },{
    permissionId: "100400",
    selected: "1",
    children:[{
      permissionId: "100400100",
      selected: "1",
    },{
      permissionId: "100400200",
      selected: "0",
    }]
  },{
    permissionId: "100500",
    selected: "0",
    children:[{
      permissionId: "100500100",
      selected: "0",
    },{
      permissionId: "100500200",
      selected: "0",
    }]
  }]
}]
let x =  getSelectSermissions(arr);
console.log(x) //['100100', '100200', '100300', '100400100']

 

补充:传参数给后端的数据,getHalfCheckedNodes,getCheckedKeys,具体查看element文档

      let menus = []
      // 得到半选的父节点数据
      this.$refs.menu.getHalfCheckedNodes().forEach(function (data, index) {
        menus.push({
          permissionId: data.permissionId
        });
      });
      // 得到选中的节点
      this.$refs.menu.getCheckedKeys().forEach(function (data, index) {
        menus.push({
          permissionId: data
        });
      })

 

posted @ 2022-08-31 18:42  最爱小虾  阅读(405)  评论(0编辑  收藏  举报