<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id="app">
<ul>
<li v-if="!item.hidden" v-for="item in user" :key="item.path">
{{item.title}}
</li>
</ul>
</div>
</body>
<script src="../js/vue.js"></script>
<script src="../js/vue-router.js"></script>
<script src="../js/vuex.js"></script>
<script>
const routes = [
{
path: '/', //path就是對應導航的路徑
title: '首頁' //title就是對應的導航的名字
},
{
path: '/page1',
title: '分頁1'
},
{
path: '/page2',
title: '分頁2'
},
{
path: '/page3',
title: '分頁3'
},
{
path: '/page4',
title: '分頁4'
},
{
path: '/login',
title: '登錄',
hidden: true
},
{
path: '/404',
title: '404',
hidden: true //隱藏不需要渲染到頁面上的路由
}
]
const asyncUser = [
{
path: '/page5',
title: '分頁5',
meta: {
roles: ['admin']
}
},
{
path: '/page6',
title: '分頁6',
meta: {
roles: ['admin','guest']
}
}
]
//模擬一個登錄用戶
const user = {
role: 'guest'
}
const store = new Vuex.Store({
state: {
user: null,
routes
},
mutations: {
setRoutes (state, router) {
state.routes = [...state.routes, ...router]
},
setUser (state, user) {
state.user = user
}
}
})
const router = new VueRouter({
routes
})
router.beforeEach((to, from, next) => {
//判斷user信息是否已經獲取
if (!store.state.user) {
//根據用戶的類型來生成對應的新路由
const newRouter = asyncUser.filter(route => route.meta.roles.includes(user.role))
//將新路由添加到路由中
router.addRoutes(newRouter)
//為了正確渲染導航,將對應的新的路由添加到vuex中
store.commit('setRoutes', newRouter)
//將登錄得到的use而添加到user中
store.commit('setUser', user)
}
})
const app = new Vue({
el: "#app",
router,
store,
computed: {
user () {
//獲取到vuex中的routes用來渲染導航
return this.$store.state.routes
}
}
})
</script>
</html>
后台權限的管理需要用到動態添加路由, 管理員的權限不一樣,展示的界面不一樣,登錄時判斷身份,獲取權限, 例如:超級管理員與用戶管理人員