Let's talk about the implementation method of front-end vue control routing permissions

In front-end development, routing control permissions are a very basic and important part. Routing control permissions can display different routing pages to users based on their identities and permissions. This ensures that users can only access pages that match their identities, improving website security and user experience.

Vue.js is a very popular front-end framework that provides many tools to facilitate development, including routing control permissions. In Vue, we can control user access permissions through routing guards. The specific implementation method is introduced below.

1. Create a route

First, we need to create a routing table containing all routes. It is assumed here that we have two pages, one is the homepage, and the other is the profile page that requires authorization to access.

import Vue from 'vue'
import Router from 'vue-router'
import Home from '@/components/Home'
import Profile from '@/components/Profile'

Vue.use(Router)

export default new Router({
  routes: [
    {
      path: '/',
      name: 'Home',
      component: Home
    },
    {
      path: '/profile',
      name: 'Profile',
      component: Profile,
      meta: {
        requiresAuth: true
      }
    }
  ]
})

In the routing table, we added the meta: { requiresAuth: true } attribute for the route to access the profile page, indicating that the page requires authorization to access.

2. Configure routing guards

Next, configure routing guards in Vue. The route guard is a callback function that can react before and after route changes. We can determine whether there is access permission in the routing guard by determining whether the user is logged in and the user's identity.

Here we first define a routing guard named auth:

router.beforeEach((to, from, next) => {
  const requiresAuth = to.matched.some(record => record.meta.requiresAuth)
  const currentUser = firebase.auth().currentUser
  if (requiresAuth && !currentUser) {
    next('/login')
  } else {
    next()
  }
})

In this routing guard, we first pass to.matched.some(record = > record.meta.requiresAuth) Determine whether the page to be accessed requires authorization. If authorization is required, continue to determine whether the current user is logged in. If the user is not logged in, jump to the login page. Otherwise, call the next() method to continue executing the route jump.

3. Implement the login function

Finally, we need to implement the login function. Since it is assumed here that we use Firebase as the backend, to implement login, we need to install the firebase and firebase-auth packages first. On the login page, call Firebase's signInWithEmailAndPassword method to log in. After successful login, you can jump to the homepage.

import firebase from 'firebase'

export default {
  name: 'Login',
  data () {
    return {
      email: '',
      password: ''
    }
  },
  methods: {
    login () {
      firebase.auth().signInWithEmailAndPassword(this.email, this.password)
        .then(() => {
          this.$router.push('/')
        })
        .catch((error) => {
          console.log(error)
        })
    }
  }
}

The above is how to implement routing control permissions in front-end Vue. Through the routing guard and login functions, we can implement basic routing permission control, protect website security and improve user experience.

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