How can I automatically get Bearer token to axios header in view using vue and laravel

Question

I am trying to get the token of current user to get retrieve the data like this:

async getUser() {
    const config = {
                headers: {
                    'Accept': 'application/json',
                    'Authorization': 'Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJ...'
                }
            }
  await this.axios
    .get("/api/auth/testapi", config)
    .then((response) => {
      this.user = response.data;
    })
    .catch((error) => {
      console.log(error);
      this.user = [];
    });
},

How can I set the 'Authorization' header to auto get the current token of the authenticated user?

I tried local storage as showing below:

async getUser() {
    const token = localStorage.getItem('access_token');
    const config = {
                headers: {
                    'Accept': 'application/json',
                    'Authorization': `Bearer ${token}`
                }
            }
  await this.axios
    .get("/api/auth/testapi", config)
    .then((response) => {
      this.user = response.data;
    })
    .catch((error) => {
      console.log(error);
      this.user = [];
    });
},

and it didn't work as well.

What seems to be the problem?

---

UPDATE:

app.js:

require("./src/main.js");
import VueAxios from "vue-axios";
import axios from "axios";
Vue.use(VueAxios, axios);


if (localStorage.has("access_token")) {
axios.defaults.headers.common["Authorization"] =
"Bearer " + localStorage.getItem("access_token");
}

loginSuccess(accessToken) {
localStorage.setItem('access_token', accessToken);
window.location.href = '/home';
}

There is a problem after "if" ends

';' expected.

Answer 1

What i would do,

on every request, on a js file (not vue), like your bootstrap.js file (because it will be loader sooner):

let access_token = localStorage.getItem('access_token');
if(access_token) {
    axios.defaults.headers.common['Authorization'] = 'Bearer ' + access_token;
}

on your login function, when you login the user and retrieve the access token:

loginSuccess(accessToken) {
    localStorage.setItem('access_token', accessToken);
    window.location.href = '/home';
}

it will redirect the user to your home page or whatever page the user needs to be redirected to, and the access_token will be set on the localStorage.

The last bit remaining is deleting the localStorage access_token item when the user is logged out, and perhaps catching 401 with an interceptor, to delete access_token and redirect to /login on token expiration.

window.axios.interceptors.response.use(function (response) {
    return response;
}, function (error) {
    if (401 === error.response.status) {
        localStorage.removeItem('access_token');
        window.location.href = '/login'
    } else {
        return Promise.reject(error);
    }
});

You perhaps will need to check the domain of the 401 to be sure it's yours, if you intent to make axios requests to external endpoints that are not yours