本文小编为大家详细介绍“ElementUI命名视图怎么实现复杂顶部和左侧导航栏”，内容详细，步骤清晰，细节处理妥当，希望这篇“ElementUI命名视图怎么实现复杂顶部和左侧导航栏”文章能帮助大家解决疑惑，下面跟着小编的思路慢慢深入，一起来学习新知识吧。
项目目录如下：
1、router配置（router/index.js）如下：
import Vue from 'vue'
import Router from 'vue-router'
import TopNav from '@/components/nav/topNav.vue'
import LeftNav from '@/components/nav/leftNav.vue'
import Home from '@/views/home.vue'
import Dashboard from '@/views/workbench/dashboard.vue'
import MySettings from '@/views/workbench/mySettings.vue'
import Mission from '@/views/workbench/mission/mission.vue'
import Plan from '@/views/workbench/plan.vue'
import Maillist from '@/views/workbench/maillist.vue'
import EnterpriseList from '@/views/enterprise/index.vue'
import EnterpriseAdd from '@/views/enterprise/add.vue'
import EnterpriseDetail from '@/views/enterprise/detail.vue'
import EnterpriseValidate from '@/views/enterprise/validate.vue'
import VehicleManage from '@/views/vehicle/index.vue'
import DeptManager from '@/views/dept/index.vue'
Vue.use(Router)
let router = new Router({
routes: [
{
path: '/',
type: 'home', // 根据type区分不同模块（顶部导航）
name: 'home', // 根据name区分不同子模块（左侧导航）
redirect: '/dashboard',
component: Home,
children: [
{
path: '/dashboard',
name: '首页', // 当前路由的name（导航栏显示文字）
components: {
default: Dashboard,
top: TopNav,
aside: LeftNav
},
leaf: true, // 只有一个节点
iconCls: 'iconfont icon-home', // 图标样式class
menuShow: true
},
{
path: '/mySet',
components: {
default: MySettings,
top: TopNav,
aside: LeftNav
},
name: '我的设置',
iconCls: 'el-icon-menu',
menuShow: true,
children: [
{ path: '/mySet/plan', component: Plan, name: '行程计划', menuShow: true },
{ path: '/mySet/mission', component: Mission, name: '我的任务', menuShow: true },
{ path: '/mySet/maillist', component: Maillist, name: '通讯录', menuShow: true }
]
}
]
},
{
path: '/enterpriseManager',
type: 'enterprise',
name: 'enterprise',
component: Home,
redirect: '/enterprise/list',
menuShow: true,
children: [
{
path: '/enterprise/list',
name: '企业信息',
components: {
default: EnterpriseList,
top: TopNav,
aside: LeftNav
},
leaf: true,
iconCls: 'el-icon-setting',
menuShow: true
},
{
path: '/enterprise/detail',
name: '企业详情',
components: {
default: EnterpriseDetail,
top: TopNav,
aside: LeftNav
},
leaf: true,
iconCls: 'el-icon-setting',
menuShow: false
},
{
path: '/enterprise/add',
name: '添加企业',
components: {
default: EnterpriseAdd,
top: TopNav,
aside: LeftNav
},
leaf: true,
iconCls: 'el-icon-menu',
menuShow: true
},
{
path: '/enterprise/validate',
name: '企业认证',
components: {
default: EnterpriseValidate,
top: TopNav,
aside: LeftNav
},
leaf: true,
iconCls: 'el-icon-menu',
menuShow: true
}
]
},
{
path: '/vehicleManager',
type: 'enterprise',
name: 'vehicle',
component: Home,
redirect: '/vehicle/list',
menuShow: true,
children: [
{
path: '/vehicle/list',
name: '车辆信息',
components: {
default: VehicleManage,
top: TopNav,
aside: LeftNav
},
leaf: true, // 只有一个节点
iconCls: 'iconfont icon-home', // 图标样式class
menuShow: true
}
]
},
{
path: '/deptManager',
type: 'enterprise',
name: 'dept',
component: Home,
redirect: '/dept/list',
menuShow: true,
children: [
{
path: '/dept/list',
name: '部门信息',
components: {
default: DeptManager,
top: TopNav,
aside: LeftNav
},
leaf: true, // 只有一个节点
iconCls: 'iconfont icon-home', // 图标样式class
menuShow: true
}
]
}
]
});特别说明：
这里的路由对象router ，设置的是最多三级，一级路由主要对应的是顶部导航和其他无子页面的路由，二级和三级路由分别对应的是左侧导航的一级和二级菜单（比如三级路由对应的就是左侧导航的二级菜单），二级路由设置leaf属性，值为true表明该路由下没有子菜单（如果该路由下的某页面不显示在左侧导航，不算子菜单）。
2、home.vue，这里分别有name=top,aside,default三个视图，top代表顶部导航，aside代表左侧导航，剩下的default就是默认视图，代表右侧内容区
<template>
<el-row class="container">
<!--头部-->
<el-col :span="24"><router-view name="top"></router-view></el-col>
<el-col :span="24" class="main">
<!--左侧导航-->
<router-view name="aside"></router-view>
<!--右侧内容区-->
<section class="content-container">
<div class="grid-content bg-purple-light">
<el-col :span="24" class="content-wrapper">
<transition name="fade" mode="out-in">
<router-view></router-view>
</transition>
</el-col>
</div>
</section>
</el-col>
</el-row>
</template>
<script>
export default {
name: 'home',
data () {
return {
loading: false
}
}
}
</script>3、topNav.vue 是顶部导航菜单的代码
<template>
<el-row class="container">
<!--头部-->
<el-col :span="24" class="topbar-wrap">
<div class="topbar-logo topbar-btn">
<a href="/" rel="external nofollow" rel="external nofollow" ><img src="../../assets/logo.png" ></a>
</div>
<div class="topbar-logos">
<a href="/" rel="external nofollow" rel="external nofollow" >车车综合管理</a>
</div>
<div class="topbar-title">
<!-- 注意：这里就是topNavState作用之处，根据当前路由所在根路由的type值判断显示不同顶部导航菜单 -->
<el-row v-show="$store.state.topNavState==='home'">
<el-col :span="24">
<el-menu :default-active="defaultActiveIndex" class="el-menu-demo" mode="horizontal" @select="handleSelect" :router="true">
<el-menu-item index="/">工作台</el-menu-item>
<el-menu-item index="/enterpriseManager">企业管理</el-menu-item>
<el-menu-item index="/orderManager">订单管理</el-menu-item>
<el-menu-item index="/systemManager">系统管理</el-menu-item>
</el-menu>
</el-col>
</el-row>
<el-row v-show="$store.state.topNavState==='enterprise'">
<el-col :span="24">
<el-menu :default-active="defaultActiveIndex" class="el-menu-demo" mode="horizontal" @select="handleSelect" :router="true">
<el-menu-item index="/enterpriseManager">企业信息</el-menu-item>
<el-menu-item index="/vehicleManager">车辆信息</el-menu-item>
<el-menu-item index="/deptManager">组织架构</el-menu-item>
</el-menu>
</el-col>
</el-row>
</div>
<div class="topbar-account topbar-btn">
<el-dropdown trigger="click">
<span class="el-dropdown-link userinfo-inner">
<i class="iconfont icon-user"></i> {{nickname}} <i class="el-icon-caret-bottom"></i></span>
<el-dropdown-menu slot="dropdown">
<el-dropdown-item>
<div @click="jumpTo('/user/profile')"><span >个人信息</span></div>
</el-dropdown-item>
<el-dropdown-item>
<div @click="jumpTo('/user/changepwd')"><span >修改密码</span></div>
</el-dropdown-item>
<el-dropdown-item divided @click.native="logout">退出登录</el-dropdown-item>
</el-dropdown-menu>
</el-dropdown>
</div>
</el-col>
</el-row>
</template>
<script>
import 'element-ui/lib/theme-chalk/display.css';
import {road} from '../../road.js'
export default {
data(){
return {
loading: false,
companyName: '',
nickname: '',
defaultActiveIndex: '/',
homeMenu: false,
messageCount: 5
}
},
created() {
road.$on('setNickName', (text) => {
this.nickname = text;
});
road.$on('goto', (url) => {
if(url === "/login") {
localStorage.removeItem('access-user');
this.$router.push(url);
}
});
// 组件创建完后获取数据
this.fetchNavData();
},
methods: {
jumpTo(url){
this.$router.push(url); //用go刷新
},
handleSelect(index){
this.defaultActiveIndex = index;
},
fetchNavData () { // 初始化菜单激活项
let cur_path = this.$route.path; //获取当前路由
let routers = this.$router.options.routes; // 获取路由对象
let nav_type = "", nav_name = "";
for (var i = 0; i < routers.length; i++) {
let children = routers[i].children;
if(children){
for (let j = 0; j < children.length; j++) {
if (children[j].path === cur_path) {
nav_type = routers[i].type;
nav_name = routers[i].name;
break;
}
// 如果该菜单下还有子菜单
if(children[j].children) {
let grandChildren = children[j].children;
for(let z=0; z<grandChildren.length; z++) {
if(grandChildren[z].path === cur_path) {
nav_type = routers[i].type;
nav_name = routers[i].name;
break;
}
}
}
}
}
}
this.$store.state.topNavState = nav_type;
this.$store.state.leftNavState = nav_name;
if(nav_type == "home"){
this.defaultActiveIndex = "/";
} else {
this.defaultActiveIndex = "/" + nav_name + "Manager";
}
},
logout(){
//logout
this.$confirm('确认退出吗?', '提示', {
confirmButtonClass: 'el-button--warning'
}).then(() => {
//确认
localStorage.removeItem('access-user');
road.$emit('goto', '/login');
}).catch(() => {});
}
},
mounted() {
let user = window.localStorage.getItem('access-user');
if (user) {
user = JSON.parse(user);
this.nickname = user.nickname || '';
this.companyName = user.companyName || '';
}
},
watch: {
'$route': function(to, from){ // 路由改变时执行
//console.info("to.path:" + to.path);
this.fetchNavData();
}
}
}
</script>注意fetchNavData()这个方法，主要是根据当前跳转的路由，去找到这个路由对应的type（对应顶部导航栏的分类）和name（对应左侧导航栏的分类），然后保存type和name到$store中，这样在topNav.vue组件可以根据$store中的type显示相应的菜单，同样在leftNav.vue组件就可以取到这个name值并显示相应的左侧菜单栏了。另外，里面的top和aside是命名视图，分别对应顶部导航组件和左侧导航组件。
补充：topNavState和leftNavState这两个状态就是精髓所在，分别控制顶部和左侧导航展示对应模块菜单，这两个状态是在vuex配置文件store.js中设置的
import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
const state = {
collapsed: false, // 左侧导航折叠状态
topNavState: 'home',
leftNavState: 'dispatch'
}
export default new Vuex.Store({
state
})store.js文件在main.js中引入：
import store from './store.js'
new Vue({
router,
store,
el: '#app',
render: h => h(App)
})4、leftNav.vue 左侧导航栏（这里的左侧菜单栏最多有两级菜单）
<template>
<!--左侧导航-->
<aside :class="{showSidebar:!collapsed}">
<!--展开折叠开关-->
<div class="menu-toggle" @click.prevent="collapse">
<i class="iconfont icon-outdent" v-show="!collapsed" title="收起"></i>
<i class="iconfont icon-indent" v-show="collapsed" title="展开"></i>
</div>
<!--导航菜单-->
<el-menu :default-active="$route.path" router :collapse="collapsed" ref="leftNavigation">
<template v-for="(issue,index) in $router.options.routes">
<!-- 注意：这里就是leftNavState状态作用之处，当该值与router的根路由的name相等时加载相应菜单组 -->
<template v-if="issue.name === $store.state.leftNavState">
<template v-for="(item,index) in issue.children">
<el-submenu v-if="!item.leaf" :index="index+''" v-show="item.menuShow">
<template slot="title"><i :class="item.iconCls"></i><span slot="title">{{item.name}}</span></template>
<el-menu-item v-for="term in item.children" :key="term.path" :index="term.path" v-if="term.menuShow"
:class="$route.path==term.path?'is-active':''">
<i :class="term.iconCls"></i><span slot="title">{{term.name}}</span>
</el-menu-item>
</el-submenu>
<el-menu-item v-else-if="item.leaf" :index="item.path"
:class="$route.path==item.path?'is-active':''" v-show="item.menuShow">
<i :class="item.iconCls"></i><span slot="title">{{item.name}}</span>
</el-menu-item>
</template>
</template>
</template>
</el-menu>
</aside>
</template>
<script>
export default {
name: 'leftNav',
data () {
return {
loading: false,
collapsed: this.$store.state.collapsed,
}
},
methods: {
//折叠导航栏
collapse: function () {
this.collapsed = !this.collapsed;
this.$store.state.collapsed = this.collapsed;
},
// 左侧导航栏根据当前路径默认打开子菜单（如果当前是二级菜单，则父级子菜单默认打开）
defaultLeftNavOpened () {
let cur_path = this.$route.path; //获取当前路由
let routers = this.$router.options.routes; // 获取路由对象
let subMenuIndex = '', needOpenSubmenu = false;
for (let i = 0; i < routers.length; i++) {
let children = routers[i].children;
if(children){
for (let j = 0; j < children.length; j++) {
if(children[j].path === cur_path) {
break;
}
// 如果该菜单下还有子菜单
if(children[j].children && !children[j].leaf) {
let grandChildren = children[j].children;
for(let z=0; z<grandChildren.length; z++) {
if(grandChildren[z].path === cur_path) {
subMenuIndex = j;
needOpenSubmenu = true;
break;
}
}
}
}
}
}
if(this.$refs['leftNavigation'] && needOpenSubmenu) {
this.$refs['leftNavigation'].open(subMenuIndex); // 打开子菜单
}
},
},
watch: {
'$route': function(to, from){ // 路由改变时执行
//console.info("to.path:" + to.path);
}
},
mounted() {
this.defaultLeftNavOpened();
},
}
</script>5、如果左侧导航含有二级菜单，
比如“我的设置（/mySet）”中，含有三个子菜单：
路由配置如下：(具体文件路径及配置请看router/index.js)
{
path: '/mySet',
components: {
default: MySettings,
top: TopNav,
aside: LeftNav
},
name: '我的设置',
iconCls: 'el-icon-menu',
menuShow: true,
children: [
{ path: '/mySet/plan', component: Plan, name: '行程计划', menuShow: true },
{ path: '/mySet/mission', component: Mission, name: '我的任务', menuShow: true },
{ path: '/mySet/maillist', component: Maillist, name: '通讯录', menuShow: true }
]
}此时，我们只需在父级菜单对应视图（MySettings）中添加一个router-view即可：
<template> <router-view></router-view> </template>
6、整体效果图：
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