VUE Element Admin 动态路由

框架：vue-element-template

目标：自定义路由权限动态刷新侧边栏

1 从vue-element-admin 集成版的src/store/modules目录下把permission.js拷贝到vue-element-template的src/store/modules目录下

https://github.com/PanJiaChen/vue-element-admin/blob/master/src/store/modules/permission.js

import { asyncRoutes, constantRoutes } from '@/router'

/**
 * Use meta.role to determine if the current user has permission
 * @param roles
 * @param route
 */
function hasPermission(roles, route) {
  if (route.meta && route.meta.roles) {
    return roles.some(role => route.meta.roles.includes(role))
  } else {
    return true
  }
}

/**
 * Filter asynchronous routing tables by recursion
 * @param routes asyncRoutes
 * @param roles
 */
export function filterAsyncRoutes(routes, roles) {
  const res = []

  routes.forEach(route => {
    const tmp = { ...route }
    if (hasPermission(roles, tmp)) {
      if (tmp.children) {
        tmp.children = filterAsyncRoutes(tmp.children, roles)
      }
      res.push(tmp)
    }
  })

  return res
}

const state = {
  routes: [],
  addRoutes: []
}

const mutations = {
  SET_ROUTES: (state, routes) => {
    state.addRoutes = routes
    state.routes = constantRoutes.concat(routes)
  }
}

const actions = {
  generateRoutes({ commit }, roles) {
    return new Promise(resolve => {
      let accessedRoutes
      //超级管理员为admin角色，能访问所有路由
      if (roles.includes('admin')) {
        accessedRoutes = asyncRoutes || []
      } else {
        accessedRoutes = filterAsyncRoutes(asyncRoutes, roles)
      }
      commit('SET_ROUTES', accessedRoutes)
      resolve(accessedRoutes)
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}

　　

2 修改vue-element-template的src/store/modules目录下的user.js

import { login, logout, getInfo } from '@/api/user'
import { getToken, setToken, removeToken } from '@/utils/auth'
import router, {resetRouter, sysRouters} from '@/router'

const getDefaultState = () => {
  return {
    token: getToken(),
    name: '',
    avatar: '',
    roles:[]   //添加角色变量
  }
}

const state = getDefaultState()

const mutations = {
  RESET_STATE: (state) => {
    Object.assign(state, getDefaultState())
  },
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  },
  //添加VUEX保存角色信息
  SET_ROLES: (state,roles) => {
    state.roles = roles
  }
}

//登陆认证
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.data
        commit('SET_TOKEN', data.token)
        setToken(data.token)
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  //获取用户信息
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getInfo(state.token).then(response => {
        const { data } = response.data
        if (!data) {
          return reject('Verification failed, please Login again.')
        }
        //存储用户信息
        const { name, avatar,roles} = data
        commit('SET_NAME', name)
        commit('SET_AVATAR', avatar)
        //存储角色信息
        commit('SET_ROLES', roles)
        resolve(data)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // 退出登陆
  logout({ commit, state }) {
    return new Promise((resolve, reject) => {
      logout(state.token).then(() => {
        removeToken() // must remove  token  first
        resetRouter()
        commit('RESET_STATE')
        //把角色信息设置为空列表
        commit('SET_ROLES', [])
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      removeToken() // must remove  token  first
      commit('RESET_STATE')
      //把角色信息设置为空列表
      commit('SET_ROLES', [])
      resolve()
    })
  }
}


export default {
  namespaced: true,
  state,
  mutations,
  actions
}

3 修改vue-element-template的src/store目录下的getters.js

const getters = {
  sidebar: state => state.app.sidebar,
  device: state => state.app.device,
  token: state => state.user.token,
  avatar: state => state.user.avatar,
  name: state => state.user.name,
　//角色
  roles:state => state.user.roles,
  //动态路由
  permission_routes:state => state.permission.routes
}
export default getters

4 修改vue-element-template的src/store目录下的index.js

import Vue from 'vue'
import Vuex from 'vuex'
import getters from './getters'
import app from './modules/app'
import settings from './modules/settings'
import user from './modules/user'
//导入
import permission from "@/store/modules/permission"

Vue.use(Vuex)

const store = new Vuex.Store({
  modules: {
    app,
    settings,
    user,
　　//添加
    permission
  },
  getters
})

export default store

5 修改vue-element-template的src/layout/components/Sidebar目录下的index.vue

 6 修改vue-element-template的src/目录的permission.js

        try {
          // 注释掉原来的
          // await store.dispatch('user/getInfo')
          // next()
          const { roles } = await store.dispatch('user/getInfo')
          const accessRoutes = await store.dispatch('permission/generateRoutes',roles)
          router.addRoutes(accessRoutes)
          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()
        }

7 修改vue-element-template的src/router目录的index.js

import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'



//公共路由
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },

  {
    path: '/',
    component: Layout,
    // redirect: '/dashboard',
    children: [{
      path: 'dashboard',
      name: 'LazyOps',
      component: () => import('@/views/dashboard/index'),
      meta: { title: 'LazyOps', icon: 'el-icon-s-home'}
    }]
  },
  // 404 page must be placed at the end !!!
]


//动态路由
export  const asyncRoutes = [
  {
    path: '/system',
    component: Layout,
    redirect: '/system/user',
    alwaysShow:true,
    name: '系统管理',
    meta: { title: '系统管理', icon: 'el-icon-s-tools',roles:['admin','test']},
    children: [
      {
        path: 'user',
        name: '用户列表',
        component: () => import('@/views/rbac/users'),
        meta: { title: '用户列表', icon: 'table',roles:['admin','test']}
      },
      {
        path: 'role',
        name: '角色列表',
        component: () => import('@/views/rbac/roles'),
        meta: { title: '角色列表', icon: 'table',roles:['admin']}
      }
    ]
  },
  { path: '*', redirect: '/404', hidden: true },
]



const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
})


const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router