如何给vue-admin-template配置动态路由

2021-08-20

前言

总结修改vue-admin-template配置动态路由的过程。

1.在store文件中添加permission.js文件

import { asyncRoutes, constantRoutes } from '@/router'
import { getRoutes } from '@/api/system/role'
import Layout from '@/layout'
// import sysuserindex from '@/views/sysuser/index'

/**
 * 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
  }
}

/**
 * Use names to determine if the current user has permission
 * @param names
 * @param route
 */
function hasPathPermission(paths, route) {
  if (route.path) {
    return paths.some(path => route.path === path.path)
  } else {
    return true
  }
}

/**
  * 后台查询的菜单数据拼装成路由格式的数据
  * @param routes
  */
export function generaMenu(routes, data) {
  data.forEach(item => {
    const menu = {
      path: item.path,
      component: item.component === 'Layout' ? Layout : loadView(item.component),
      // hidden: item.visible !== '0',
      children: [],
      name: item.name,
      meta: {
        title: item.title,
        icon: item.icon,
        noCache: true
      }
    }
    if (item.children) {
      generaMenu(menu.children, item.children)
    }
    routes.push(menu)
  })
}

export const loadView = (view) => { // 路由懒加载
  return (resolve) => require(['@/views' + view], resolve)
  // return () => import(`@/views${view}`)
}

/**
 * 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
}

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

  routes.forEach(route => {
    const tmp = { ...route }
    if (hasPathPermission(paths, tmp)) {
      if (tmp.children) {
        tmp.children = filterAsyncPathRoutes(tmp.children, paths)
      }
      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 }) {
    return new Promise(resolve => {
      const loadMenuData = []

      getRoutes().then(response => {
        // console.log(JSON.stringify(response))
        let data = response
        if (response.code !== 0) {
          this.$message({
            message: '菜单数据加载异常',
            type: 0
          })
        } else {
          data = response.data
          Object.assign(loadMenuData, data)

          generaMenu(asyncRoutes, loadMenuData)
          asyncRoutes.push({ path: '*', redirect: '/404', hidden: true })
          commit('SET_ROUTES', asyncRoutes)
          resolve(asyncRoutes)
        }
      }).catch(error => {
        console.log(error)
      })
    })
  }
}

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

2.将store/index.js换一种代码形式，改为：

import Vue from 'vue'
import Vuex from 'vuex'
import getters from './getters'

Vue.use(Vuex)

// https://webpack.js.org/guides/dependency-management/#requirecontext
const modulesFiles = require.context('./modules', true, /\.js$/)

// you do not need `import app from './modules/app'`
// it will auto require all vuex module from modules file
const modules = modulesFiles.keys().reduce((modules, modulePath) => {
  // set './app.js' => 'app'
  const moduleName = modulePath.replace(/^\.\/(.*)\.\w+$/, '$1')
  const value = modulesFiles(modulePath)
  modules[moduleName] = value.default
  return modules
}, {})

const store = new Vuex.Store({
  modules,
  getters
})

export default store

3.在store/getter.js文件中添加：

1	permission_routes: state => state.permission.routes

4.在src/permission.js文件中，在获取用户信息后，获取动态菜单

1	await store.dispatch('user/getInfo')

后添加：

// generate accessible routes map based on roles
const accessRoutes = await store.dispatch('permission/generateRoutes')
// dynamically add accessible routes
router.addRoutes(accessRoutes)
next({ ...to, replace: true })

5.最后在laylout/components/sidebar/index.vue引入最终路由

(1)在mapGetters添加permission_routes

...mapGetters([
      'permission_routes',
      'sidebar'
    ]),

(2)将routes改为permission_routes

<sidebar-item v-for="route in routes" :key="route.path" :item="route" :base-path="route.path" />

改为

<sidebar-item v-for="route in permission_routes" :key="route.path" :item="route" :base-path="route.path" />

出现的问题：

在使用的过程中，加入权限模块后，刷新后权限控制的页面就默认跳转到404页面了，搞了半天终于解决了，原因是权限控制的路由模块是动态添加进去的，而我的404监听路由是在默认路由里面的，优先级比动态路由要高，所以刷新后默认先被404接管了，改一下，把404监听路由也放到动态路由的末尾就可以了。

处理方法：将constantRoutes中的以下代码注释后者删除。

1 2	// 404 page must be placed at the end !!! { path: '*', redirect: '/404', hidden: true }

把上面这个路由从constantRoutes转移到asyncRoutes中即可！

参考链接：https://blog.csdn.net/playboyanta123/article/details/106011821