Vue-Element-admin 的动态路由手把手教学
概要
本文讲述了如何在vue-element-admin的基础模板下完成动态路由的功能 整篇的登录权限流程再此就不赘述了,直接上代码 喜欢的小伙伴或者有帮助的小伙伴,麻烦点个赞 本人还自己搭了带有权限和tabview的模板 欢迎小伙伴们star Vue-Element-admin模板
1./src/store/user.js
文件更改
import { login, logout, getInfo } from '@/api/user'
import { getRoles } from '@/api/role'
import { getToken, setToken, removeToken } from '@/utils/auth'
import router, { resetRouter } from '@/router'
const state = {
token: getToken(),
name: '',
avatar: '',
introduction: '',
roles: [],
menus: [] //动态路由菜单 <=== 修改部分
}
const mutations = {
SET_TOKEN: (state, token) => {
state.token = token
},
SET_INTRODUCTION: (state, introduction) => {
state.introduction = introduction
},
SET_NAME: (state, name) => {
state.name = name
},
SET_AVATAR: (state, avatar) => {
state.avatar = avatar
},
SET_ROLES: (state, roles) => {
state.roles = roles
},
SET_MENUS: (state, menus) => { //<=== 修改部分
state.menus = menus
}
}
const actions = {
// user login
login({ commit }, userInfo) {
const { username, password } = userInfo
return new Promise((resolve, reject) => {
login({ username: username.trim(), password: password })
.then(response => {
const { data } = response
commit('SET_TOKEN', data.token)
setToken(data.token)
resolve()
})
.catch(error => {
reject(error)
})
})
},
// get user info
getInfo({ commit, state }) {
return new Promise((resolve, reject) => {
getInfo(state.token)
.then(async response => {
const { data } = response
if (!data) {
reject('Verification failed, please Login again.')
}
const { roles, name, avatar, introduction } = data
const key = state.token.split('-')[0]
const res = await getRoles()
const menusList = res.data //<=== 修改部分
const newMenusList = menusList.filter(v => { //<=== 修改部分
if (v.key === key) {
return v
}
})
console.log(`newMenusList[0].routes`, newMenusList[0].routes)
const menus = newMenusList[0].routes //<=== 修改部分
// const key =
// const menus = [ //<=== 修改部分 menus数据格式
// {
// path: "/employee",
// component: "layout/Layout",
// redirect: "/employee/index",
// children: [
// {
// path: "index",
// component: "employee/index",
// name: "C",
// meta: {
// title: "员工管理",
// icon: "peoples",
// noCache: true,
// roles: ["admin"]
// }
// }
// ]
// },
// {
// path: "/permission",
// component: 'layout/Layout',
// redirect: "/permission/page",
// name: "Permission",
// meta: {
// title: "权限管理",
// icon: "lock",
// roles: ["admin"]
// },
// children: [
// {
// path: "role",
// component: "permission/role",
// name: "RolePermission",
// meta: {
// title: "权限管理",
// roles: ["admin"]
// }
// }
// ]
// }
// ]
if (!roles || roles.length <= 0) {
reject('getInfo: roles must be a non-null array!')
}
commit('SET_ROLES', roles)
commit('SET_NAME', name)
commit('SET_AVATAR', avatar)
commit('SET_INTRODUCTION', introduction)
commit('SET_MENUS', menus) //<=== 修改部分
resolve(data)
})
.catch(error => {
reject(error)
})
})
},
// user logout
logout({ commit, state, dispatch }) {
return new Promise((resolve, reject) => {
logout(state.token)
.then(() => {
commit('SET_TOKEN', '')
commit('SET_ROLES', [])
removeToken()
resetRouter()
// reset visited views and cached views
// to fixed https://github.com/PanJiaChen/vue-element-admin/issues/2485
dispatch('tagsView/delAllViews', null, { root: true })
resolve()
})
.catch(error => {
reject(error)
})
})
},
// remove token
resetToken({ commit }) {
return new Promise(resolve => {
commit('SET_TOKEN', '')
commit('SET_ROLES', [])
removeToken()
resolve()
})
},
// dynamically modify permissions
async changeRoles({ commit, dispatch }, role) {
const token = role + '-token'
commit('SET_TOKEN', token)
setToken(token)
const { roles } = await dispatch('getInfo')
resetRouter()
// generate accessible routes map based on roles
const accessRoutes = await dispatch('permission/generateRoutes', roles, {
root: true
})
// dynamically add accessible routes
router.addRoutes(accessRoutes)
// reset visited views and cached views
dispatch('tagsView/delAllViews', null, { root: true })
}
}
export default {
namespaced: true,
state,
mutations,
actions
}
2./src/router/
建立新文件_import_development.js
//用于渲染后台渲染的数据转换为组件 这样写 为了保证自带的懒加载可以加载出组件 否则会报错
module.exports = file => {
return (resolve) => require([`@/views/${file}`], resolve)
}
3./src/permission.js
import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'
import Layout from '@/layout' //<=== 修改部分
const _import = require('./router/_import_development') //<=== 修改部分
NProgress.configure({ showSpinner: false }) // NProgress Configuration
const whiteList = ['/login', '/auth-redirect'] // no redirect whitelist
router.beforeEach(async(to, from, next) => {
// start progress bar
NProgress.start()
// set page title
document.title = getPageTitle(to.meta.title)
// determine whether the user has logged in
const hasToken = getToken()
if (hasToken) {
if (to.path === '/login') {
// if is logged in, redirect to the home page
next({ path: '/' })
NProgress.done() // hack: https://github.com/PanJiaChen/vue-element-admin/pull/2939
} else {
// determine whether the user has obtained his permission roles through getInfo
const hasRoles = store.getters.roles && store.getters.roles.length > 0
if (hasRoles) {
next()
} else {
try {
// get user info
// note: roles must be a object array! such as: ['admin'] or ,['developer','editor']
await store.dispatch('user/getInfo')
// const { roles } = await store.dispatch("user/getInfo");
const menus = filtersAsyncRouter(store.getters.menus) //<=== 修改部分
console.log(menus)
global.antRouter = menus //<=== 修改部分
router.addRoutes(menus) //<=== 修改部分
// generate accessible routes map based on roles
// const accessRoutes = await store.dispatch(
// 'permission/generateRoutes',
// roles
// )
// dynamically add accessible routes
// router.addRoutes(accessRoutes)
// hack method to ensure that addRoutes is complete
// set the replace: true, so the navigation will not leave a history record
next({ ...to, replace: true })
} catch (error) {
// remove token and go to login page to re-login
await store.dispatch('user/resetToken')
Message.error(error || 'Has Error')
next(`/login?redirect=${to.path}`)
NProgress.done()
}
}
}
} else {
/* has no token*/
if (whiteList.indexOf(to.path) !== -1) {
// in the free login whitelist, go directly
next()
} else {
// other pages that do not have permission to access are redirected to the login page.
next(`/login?redirect=${to.path}`)
NProgress.done()
}
}
})
router.afterEach(() => {
// finish progress bar
NProgress.done()
})
// 过滤服务器传来的数据,转换为组件对象 //<=== 修改部分
const filtersAsyncRouter = asyncRouterMap => {
const accessRouters = asyncRouterMap.filter(route => {
if (route.component) {
if (route.component === 'layout/Layout') {
route.component = Layout
} else {
route.component = _import(route.component)
}
}
if (route.children && route.children.length) {
route.children = filtersAsyncRouter(route.children)
}
return true
})
return accessRouters
}
4./src/layout/sidebar/index.vue
<template>
<div :class="{'has-logo':showLogo}">
<logo v-if="showLogo" :collapse="isCollapse" />
<el-scrollbar wrap-class="scrollbar-wrapper">
<el-menu
:default-active="activeMenu"
:collapse="isCollapse"
:background-color="variables.menuBg"
:text-color="variables.menuText"
:unique-opened="false"
:active-text-color="variables.menuActiveText"
:collapse-transition="false"
mode="vertical"
>
<sidebar-item v-for="route in routes" :key="route.path" :item="route" :base-path="route.path" /> //<=== 修改部分
</el-menu>
</el-scrollbar>
</div>
</template>
<script>
import { mapGetters } from 'vuex'
import Logo from './Logo'
import SidebarItem from './SidebarItem'
import variables from '@/styles/variables.scss'
export default {
components: { SidebarItem, Logo },
computed: {
...mapGetters([
'permission_routes',
'sidebar',
'menus' //<=== 修改部分
]),
routes() { //<=== 修改部分
console.log('routes', this.$router.options.routes.concat(global.antRouter))
return this.$router.options.routes.concat(global.antRouter)
},
activeMenu() {
const route = this.$route
const { meta, path } = route
// if set path, the sidebar will highlight the path you set
if (meta.activeMenu) {
return meta.activeMenu
}
return path
},
showLogo() {
return this.$store.state.settings.sidebarLogo
},
variables() {
return variables
},
isCollapse() {
return !this.sidebar.opened
}
}
}
</script>