How to check for user authentication on Vue routing navigation guards.

[prollan-localsim]

I'm setting up my routing navigation guard check on my router/index.js with the Router.beforeEach() function. However, I'm having a hard time retrieving the user authentication and user roles? Is there a way to access the user authentication and user roles while on router/index.js? Thanks.

[LinusBorg]

I'm not sure how you expect to get advice on this with zero context? We can't magically know what kind of auth solution you are using, so you will have to tell us first.

[iamabhijeet2003]

You can access user authentication and user roles in the Router.beforeEach() navigation guard by using a combination of middleware and Vuex state management.

First, you can define a middleware function that retrieves the user authentication status and roles from your Vuex store. This middleware can then be used in the beforeEach() guard to access this information before each route navigation.

Here's an example of how you can set this up:

Define a middleware function to retrieve user authentication and roles:

// router/index.js
import router from 'vue-router';
import store from '../store'; // Assuming Vuex store is in ../store/index.js

router.beforeEach((to, from, next) => {
    const isAuthenticated = store.getters['auth/isAuthenticated'];
    const userRoles = store.getters['auth/userRoles'];

    // Perform your authentication and role checks here
    if (to.meta.requiresAuth && !isAuthenticated) {
        // Redirect to login or unauthorized page
        next('/login');
    }else {
        // Continue to the requested route
        next();
    }
});

Here's a basic setup for the store/index.js:

// store/auth.js
const state = {
    isAuthenticated: false,
    userRoles: []
};

const getters = {
    isAuthenticated: state => state.isAuthenticated,
    userRoles: state => state.userRoles
};

const mutations = {
    setAuth(state, isAuthenticated) {
        state.isAuthenticated = isAuthenticated;
    },
    setUserRoles(state, roles) {
        state.userRoles = roles;
    }
};

// Actions to update authentication state and user roles

Then, you can commit mutations to update the authentication state and user roles whenever necessary, such as during login/logout

// In your login action
commit('setAuth', true);
commit('setUserRoles', user.roles);

Hope it helps you!