使用 Vue-router 进行 Firebase 身份验证检查

Question

问题是 vue-router 的 beforeEnter 比 main.js 中的 beforeCreate 钩子(Hook)更早触发并且有第二次延迟，而在重新加载 vuex 操作后将用户设置为状态。这会导致用户跳转到登录页面。

如何延迟 vue-router 的 beforeEnter 检查，直到 vuex 将授权用户设置为状态。

路由器.js

import Vue from 'vue'
import Router from 'vue-router'
import Home from '../views/Home.vue'
import auth from './auth'

Vue.use(Router)

export default new Router({
  mode: 'history',
  routes: [
    {
      path: '/',
      name: 'home',
      component: Home
    },
    {
      path: '/reservations',
      name: 'Reservations',
      component: () => import('@/views/Reservation/Reservations.vue'),
      beforeEnter: auth
    }
  ]
})

auth.js

import { store } from "../store";

export default (to, from, next) => {
    if(store.getters.user) {
        next()
    } else {
        console.log('auth')
        next('/signin')
    }
}

主要.js

import Vue from 'vue'
import App from './App.vue'
import router from './router/router'
import {store} from './store'
import firebase from 'firebase/app'
import 'firebase/app'    
import config from './config'    
    
new Vue({
  router,
  store,
    render: h => h(App),
    beforeCreate() {
        firebase.initializeApp(config).firestore().settings({timestampsInSnapshots: true})
        console.log('main')     
        this.$store.dispatch('authCheck')   
    }
}).$mount('#app')

store/user.js

import firebase from 'firebase/app'
import 'firebase/auth'

export default{
    state: {
        user: null
    },
    mutations: {
        setUser (state, payload) {
      state.user = payload
        }       
  },
    actions: {
        authCheck({ commit }) {
            commit('setLoading', true)
            firebase.auth().onAuthStateChanged((user) => {              
                if(user){
                    commit('setUser', {
                        id: user.uid,
                        name: user.displayName,
                        email: user.email
                    })
                    commit('setLoading', false)
                }
            })
        },      
        logout({commit}) {
            firebase.auth().signOut()
            commit('setUser', null)
        }
    },
    getters: {
        user (state) {
            return state.user
        }
    }
}

在控制台中，我首先看到来自 beforeEnter 检查的“auth”，然后是来自 beforeCreate 的“main”。如何在路由器检查之前触发“authCheck”

Answer 1

在您的 auth.js 文件中而不是监控商店，您应该等待 authStateChanged 事件，然后当您从 firebase 收到用户时进行处理。

auth.js

export default (to, from, next) => {
  firebase.auth().onAuthStateChanged(function (user) {       
    if (user)         
      next();        
    else          
      next('/signin');        
  });
}