vue-router 基于后端permissions动态生成导航菜单的示
目录
- Vue.js
- 1、注册全局守卫
- 2、Vuex状态管理 全局缓存routes
- 3、路由拦截
- 4、路由菜单
- 5、递归菜单vue组件
Vue.js
- vue-router
- vuex
1、注册全局守卫
核心逻辑
1、token身份验证(后端) => token失效返回登录页面
2、获取用户权限
3、校验permissions，动态添加路由菜单
router.beforeResolve 注册一个全局守卫。和 router.beforeEach 类似，区别是在导航被确认之前，同时在所有组件内守卫和异步路由组件被解析之后，解析守卫就被调用。
router.beforeResolve(async (to, from, next) => {
let hasToken = store.getters['User/accessToken']
if (!settings.loginInterception) hasToken = true
if (hasToken) {
if (to.path === '/auth/sign-in') {
next({ path: '/' })
} else {
const hasPermissions =
store.getters['User/permissions'] &&
store.getters['User/permissions'].length > 0
if (hasPermissions) {
next()
} else {
try {
let permissions
if (!constant.loginInterception) {
// settings.js loginInterception为false时，创建虚拟权限
await store.dispatch('User/setPermissions', ['admin'])
permissions = ['admin']
} else {
permissions = await store.dispatch('User/getUserInfo')
}
let accessRoutes = []
accessRoutes = await store.dispatch('Routes/setRoutes', permissions)
// 添加路由
router.addRoutes(accessRoutes)
next({ ...to, replace: true })
} catch {
await store.dispatch('User/resetAccessToken')
}
}
}
} else {
if (settings.routesWhiteList.indexOf(to.path) !== -1) {
next()
} else {
next('/auth/sign-in')
}
}
document.title = getPageTitle(to.meta.title)
})
settings.js 全局设置
export default {
// 是否开启登录拦截
loginInterception: true,
// 不经过token校验的路由
routesWhiteList: ['/auth/sign-in', '/auth/register', '/401', '/404'],
}
2、Vuex状态管理 全局缓存routes
- state ：对数据的全局存储
- getter： 可以理解为computed ，对数据进行计算
- mutations ：对数据的同步更改
- actions：对数据的异步更改（实现异步操作）
- module： 将 store 分割成模块
/**
* @author Alan
* @description 路由拦截状态管理
*/
import { asyncRoutes, constantRoutes } from '@/router'
import { filterAsyncRoutes } from '@/Utils/handleRoutes'
const state = () => ({
routes: [],
partialRoutes: []
})
const getters = {
routes: (state) => state.routes,
partialRoutes: (state) => state.partialRoutes
}
const mutations = {
setRoutes (state, routes) {
state.routes = constantRoutes.concat(routes)
},
setPartialRoutes (state, routes) {
state.partialRoutes = constantRoutes.concat(routes)
}
}
const actions = {
async setRoutes ({ commit }, permissions) {
const finallyAsyncRoutes = await filterAsyncRoutes(
[...asyncRoutes],
permissions
)
commit('setRoutes', finallyAsyncRoutes)
return finallyAsyncRoutes
},
setPartialRoutes ({ commit }, accessRoutes) {
commit('setPartialRoutes', accessRoutes)
return accessRoutes
}
}
export default { namespaced: true, state, getters, mutations, actions }
3、路由拦截
/**
* @author Alan
* @description 判断当前路由是否包含权限
* @param permissions
* @param route
* @returns {boolean|*}
*/
export function hasPermission (permissions, route) {
if (route.meta && route.meta.permissions) {
return permissions.some((role) => route.meta.permissions.includes(role))
} else {
return true
}
}
/**
* @author Alan
* @description 根据permissions数组拦截路由
* @param routes
* @param permissions
* @returns {[]}
*/
export function filterAsyncRoutes (routes, permissions) {
const finallyRoutes = []
routes.forEach((route) => {
const item = { ...route }
if (hasPermission(permissions, item)) {
if (item.children) {
item.children = filterAsyncRoutes(item.children, permissions)
}
finallyRoutes.push(item)
}
})
return finallyRoutes
}
4、路由菜单
/*
* @author Alan
* @description 公共路由
*/
export const constantRoutes = [
{
path: '/auth',
name: 'auth1',
component: AuthLayout,
children: authChildRoutes('auth1'),
hidden: true // 隐藏菜单
},
{
path: '/',
name: 'dashboard',
component: VerticleLayout,
meta: {
title: 'Dashboard',
name: 'sidebar.dashboard',
is_heading: false,
is_active: false,
link: '',
class_name: '',
is_icon_class: true,
icon: 'ri-home-4-line',
permissions: ['admin']
},
children: childRoutes('dashboard')
}
]
/*
* @author Alan
* @description 异步路由
*/
export const asyncRoutes = [
{
path: '/menu-design',
name: 'horizontal-dashboard',
component: HorizantalLayout,
meta: {
title: 'Menu Design',
name: 'sidebar.MenuDesign',
is_heading: false,
is_active: false,
link: '',
class_name: '',
is_icon_class: true,
icon: 'ri-menu-3-line',
permissions: ['admin']
},
children: horizontalRoute('dashboard')
}, {
path: '/core',
name: 'core',
component: VerticleLayout,
meta: {
title: 'UI Elements',
name: 'sidebar.uiElements',
is_heading: false,
is_active: false,
class_name: '',
link: '',
is_icon_class: true,
icon: 'ri-pencil-ruler-line',
permissions: ['admin']
},
children: coreChildRoute('core')
}
]
5、递归菜单vue组件
<template>
<b-collapse tag="ul" :class="className" :visible="open" :id="idName" :accordion="accordianName">
<li v-for="(item,index) in items" :key="index" :class=" !hideListMenuTitle? 'p-0' : item.meta.is_heading ? 'iq-menu-title' :activeLink(item) && item.children ? 'active' : activeLink(item) ? 'active' : ''">
<template v-if="!item.hidden">
<i v-if="item.meta.is_heading && hideListMenuTitle" class="ri-subtract-line" />
<span v-if="item.meta.is_heading && hideListMenuTitle">{{ $t(item.meta.name) }}</span>
<router-link :to="item.meta.link" v-if="!item.is_heading" :class="`iq-waves-effect ${activeLink(item) && item.children ? 'active' : activeLink(item) ? 'active' : ''}`" v-b-toggle="item.meta.name">
<i :class="item.meta.icon" v-if="item.meta.is_icon_class"/>
<template v-else v-html="item.meta.icon">
</template>
<span>{{ $t(item.meta.name) }}</span>
<i v-if="item.children" class="ri-arrow-right-s-line iq-arrow-right" />
<small v-html="item.meta.append" v-if="hideListMenuTitle" :class="item.meta.append_class" />
</router-link>
<List v-if="item.children" :items="item.children" :sidebarGroupTitle="hideListMenuTitle" :open="item.meta.link.name !== '' && activeLink(item) && item.children ? true : !!(item.meta.link.name !== '' && activeLink(item))" :idName="item.meta.name" :accordianName="`sidebar-accordion-${item.meta.class_name}`" :className="`iq-submenu ${item.meta.class_name}`" />
</template>
</li>
</b-collapse>
</template>
<script>
import List from './CollapseMenu' // 自身组件
import { core } from '../../../config/pluginInit'
export default {
name: 'List',
props: {
items: Array,
className: { type: String, default: 'iq-menu' },
open: { type: Boolean, default: false },
idName: { type: String, default: 'sidebar' },
accordianName: { type: String, default: 'sidebar' },
sidebarGroupTitle: { type: Boolean, default: true }
},
components: {
List
},
computed: {
hideListMenuTitle () {
return this.sidebarGroupTitle
}
},
mounted () {
},
methods: {
activeLink (item) {
return core.getActiveLink(item, this.$route.name)
}
}
}
</script>
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