vue-element-admin一个基于 vue2.0 和 Eelement 的控制面板 UI 框架，这是使用vue技术栈开发的前端程序员的首选管理系统模板，模板以及非常的成熟了，并且有相关的社区和维护人员，开发时候遇到问题也不要慌。
推荐指数：
Github 地址：https://github.com/PanJiaChen/vue-element-admin
Demo体验：https://panjiachen.github.io/vue-element-admin/#/dashboard
官方文档：https://panjiachen.github.io/vue-element-admin-site/zh/
今天就来说一下，vue如何获取Elementui Tree 树形控件当前选中的节点。废话不多说，首先看一下官方文档吧，看看官方文档是怎么给到的例子吧：
Tree 树形控件文档：https://element.eleme.cn/#/zh-CN/component/tree
要求：
Elementui Tree 树形控件，将勾选选中的值放在list集合里面提交
提交格式是这样的，也就是将勾选项放在一个数组里面，作为参数提交给后端即可。
步骤：
这里我用到了json本地的数据，因为掉接口数据，不太方便写demo，后面统一都用到mock，json数据了，如果需要用到项目里面，后面直接修改一下
将
//获取树权限节点接口定义
getZtreeList() {
this.dataLoading = true;
import("./mock").then((res) => {
this.setTree = res.data;
this.organList = res.data.map((a) => ({
label: a.description,
value: a.id,
}));
this.getListData();
this.dataLoading = false;
});
},
改成这样即可
//调用接口
import {getZtreeList} from "@/api/permission/role";
//获取树权限节点接口定义
getZtreeList() {
this.dataLoading = true;
getZtreeList(params).then((res) => {
this.setTree = res.data;
this.organList = res.data.map((a) => ({
label: a.description,
value: a.id,
}));
this.getListData();
this.dataLoading = false;
});
},
话不多说了，来看具体的操作吧
1:在views底下新建一个test文件夹
里面新建一个vue文件和一个json文件
2：使用
mock.json
{
"msg": "success",
"code": 1,
"data": [
{
"id": 2,
"permissionToken": "data_spectaculars_token1",
"description": "数据看板",
"parentId": 1,
"checked": true
},
{
"id": 3,
"permissionToken": "data_spectaculars_stat_token2",
"description": "统计看板",
"parentId": 2,
"checked": true
},
{
"id": 4,
"permissionToken": "data_spectaculars_health_token2",
"description": "健康看板",
"parentId": 2,
"checked": true
},
{
"id": 1,
"permissionToken": "system_token0",
"description": "系统权限",
"parentId": 0,
"checked": false
},
{
"id": 5,
"permissionToken": "account_management_token1",
"description": "账户管理",
"parentId": 1,
"checked": false
},
{
"id": 6,
"permissionToken": "account_management_user_token2",
"description": "用户管理",
"parentId": 5,
"checked": false
},
{
"id": 7,
"permissionToken": "account_management_permission_token2",
"description": "权限管理",
"parentId": 5,
"checked": false
},
{
"id": 8,
"permissionToken": "data_management_token1",
"description": "数据管理",
"parentId": 1,
"checked": false
},
{
"id": 9,
"permissionToken": "data_management_organ_token2",
"description": "部门管理",
"parentId": 8,
"checked": false
},
{
"id": 10,
"permissionToken": "data_management_config_token2",
"description": "数据配置",
"parentId": 8,
"checked": false
},
{
"id": 11,
"permissionToken": "data_management_staff_token2",
"description": "人员管理",
"parentId": 8,
"checked": false
},
{
"id": 12,
"permissionToken": "data_management_asset_token2",
"description": "资产管理",
"parentId": 8,
"checked": false
},
{
"id": 13,
"permissionToken": "device_management_token1",
"description": "设备管理",
"parentId": 1,
"checked": false
}
]
}
3:test.vue实例代码
<template>
<div class="ztree">
<el-tree
:data="treeData"
show-checkbox
default-expand-all
node-key="id"
ref="tree"
highlight-current
:props="defaultProps"
@check="checkHandler"
>
</el-tree>
<el-button type="primary" @click="createData()">确定</el-button>
</div>
</template>
<script>
export default {
data() {
return {
setTree: [],
defaultProps: {
children: "children",
label: "description",
},
treeData: [],
organList: [],
questionForm: {
//permissionTokens: [],
},
};
},
watch: {},
created() {
//加载树节点
this.getZtreeList();
},
methods: {
//树文件勾选事件
checkHandler(...value) {
let a = value[1].checkedNodes.map((a) => a.description);
let b = value[1].checkedNodes.map((a) => a.permissionToken);
console.log(a);
this.questionForm.description = a;
this.questionForm.permissionToken = b;
},
//获取树权限节点接口定义
getZtreeList() {
this.dataLoading = true;
import("./mock").then((res) => {
this.setTree = res.data;
this.organList = res.data.map((a) => ({
label: a.description,
value: a.id,
}));
this.getListData();
this.dataLoading = false;
});
},
//对json的格式的转化
getListData() {
let dataArray = [];
this.setTree.forEach(function (data) {
let parentId = data.parentId;
if (parentId === 0) {
let objTemp = {
id: data.id,
description: data.description,
permissionToken: data.permissionToken,
parentId: parentId,
};
dataArray.push(objTemp);
}
});
this.treeData = this.data2treeDG(this.setTree, dataArray);
},
data2treeDG(datas, dataArray) {
for (let j = 0; j < dataArray.length; j++) {
let dataArrayIndex = dataArray[j];
let childrenArray = [];
let Id = dataArrayIndex.id;
for (let i = 0; i < datas.length; i++) {
let data = datas[i];
let parentId = data.parentId;
if (parentId == Id) {
//判断是否为儿子节点
let objTemp = {
id: data.id,
description: data.description,
permissionToken: data.permissionToken,
parentId: parentId,
};
childrenArray.push(objTemp);
}
}
dataArrayIndex.children = childrenArray;
//console.log("打印childrenArray", dataArrayIndex.children);
if (childrenArray.length > 0) {
//有儿子节点则递归
this.data2treeDG(datas, childrenArray);
}
}
// console.log("打印处理过的json", dataArray);
return dataArray;
},
//添加角色
async createData() {
const params = this.questionForm;
alert(JSON.stringify(params));
},
},
};
</script>
效果：
