Detailed explanation of vue vuex vue-rouert permission routing example

This article mainly introduces the vue vuex vue-rouert background project - permission routing. Through this article, the relationship between vue+vuex+vue-router can be clearly understood. This version is very simple and suitable for beginners. Friends who need it can For reference, I hope it can help everyone.

Project address: vue-simple-template

There are three roles in total: adan barbara carrie. The passwords are all: 123456

adan has the highest authority A. He can see red, yellow and blue pages (three pages in total)

barbara has permission B and he can see the red and yellow pages

carrie has permission C and he can see the red and blue pages

Technology stack

webpack ---- 打包神器
vue ---- JavaScript 框架
vuex ---- 实现不同组件间的状态共享
vue-router ---- 页面路由
babel-polyfill ---- 将ES6代码转为ES5代码
normalize.css ---- 重置掉该重置的样式
element-ui ---- UI组件库

Project initialization

# cd 到项目文件夹
cd weven-simple-template
# 安装依赖 （本项目还安装了其他依赖详情 请见 package.json 文件）
npm install
# 运行项目
npm run dev

Project structure

vue-cil After the scaffolding initializes the project, I Only modified the src folder

src
├── App.vue  ---- 页面入口
├── api  ---- api请求
│ └── login.js ---- 模拟json对象数据
├── assets  ---- 主题 字体等静态资源
│ └── logo.png
├── components ---- 组件
│ ├── index.vue
│ └── login.vue 
├── main.js  ---- 初始化组件 加载路由
├── router  ---- 路由
│ └── index.js
└── store  ---- vuex状态管理
 ├── getters.js
 ├── index.js
 └── modules
 └── login.js

Key point:

The key to dynamic routing lies in the router configuration The meta field and the status of vuex coexist (if you don’t understand, you can check the official documentation first)

router/index.js

// 初始化路由
export default new Router({ 
 routes: [
 {
 path: '/login',
 name: 'Login',
 component: Login
 }
 ] 
});
// 动态路由 meta 定义了role
export const powerRouter =[ 
 { path: '/',redirect:'/red', name: 'index',component: Index,hidden:false,
 children: [
 { path: '/red', name: 'red', component: red,},
 { path: '/yellow', name: 'yellow', component: yellow, meta: {role: 'B'}},
 { path: '/blue', name: 'blue', component: blue, meta: {role: 'C'}}
 ]
 }
];

store/modules/lo

Logins({ commit }, info){
  return new Promise((resolve, reject) => {
  let data={};
  loginByUserInfo.map(function (item) { //获取所以用户信息
   if(info.username === item.username || info.pew === item.pew){
   commit('SET_USERNAME',item.username); //将username和role进行存储
   sessionStorage.setItem('USERNAME', item.username); //存入 session 
   commit('SET_ROLE',item.role);
   sessionStorage.setItem('ROLE', item.role);
   return data={username:item.username,introduce:item.introduce};
   }else{
   return data;
   }
  }); 
  resolve(data);
 }).catch(error => {
  reject(error);
 });
 },
 Roles({ commit }, newrouter){
 return new Promise((resolve, reject) => {
  commit('SET_NEWROUER',newrouter); //存储最新路由
  resolve(newrouter);
 }).catch(error => {
  reject(error);
 });
 },

gin.js actions section

Logins({ commit }, info){
  return new Promise((resolve, reject) => {
  let data={};
  loginByUserInfo.map(function (item) { //获取所以用户信息
   if(info.username === item.username || info.pew === item.pew){
   commit('SET_USERNAME',item.username); //将username和role进行存储
   sessionStorage.setItem('USERNAME', item.username); //存入 session 
   commit('SET_ROLE',item.role);
   sessionStorage.setItem('ROLE', item.role);
   return data={username:item.username,introduce:item.introduce};
   }else{
   return data;
   }
  }); 
  resolve(data);
 }).catch(error => {
  reject(error);
 });
 },
 Roles({ commit }, newrouter){
 return new Promise((resolve, reject) => {
  commit('SET_NEWROUER',newrouter); //存储最新路由
  resolve(newrouter);
 }).catch(error => {
  reject(error);
 });
 },

main.js

router.beforeEach((to, from, next) => {
 if(store.getters.role){ //判断role 是否存在
 
 if(store.getters.newrouter.length !== 0){ 
  next() //resolve 钩子
 }else{
  let newrouter
  if (store.getters.role == 'A') { //判断权限
  newrouter = powerRouter
  } else {
  let newchildren = powerRouter[0].children.filter(route => {
   if(route.meta){
   if(route.meta.role == store.getters.role){
    return true
   }
   return false
   }else{
   return true
   }
  });
  newrouter = powerRouter
  newrouter[0].children = newchildren
  }
  router.addRoutes(newrouter) //添加动态路由
  store.dispatch('Roles',newrouter).then(res => { 
  next({ ...to })
  }).catch(() => { 

  })
 } 
 }else{
  if (['/login'].indexOf(to.path) !== -1) { 
  next()
 } else {
  next('/login')
 }
 }
})

components/index.vue

// mapGetters 辅助函数仅仅是将 store 中的 getter 映射到局部计算属性
...mapGetters([
 'newrouter'
 ])

It is no problem to use this project to clarify the relationship between vue+vuex+vue-router. This can be said to be super Simple version, suitable for beginners. The key points mentioned in the above content are actually the whole project.

Project address: vue-simple-template

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