Vue: Login

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Vue: Login

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By Frederik Prijck

This quickstart demonstrates how to add user login to a Vue.JS application using Auth0. We recommend that you log in to follow this quickstart with examples configured for your account.

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System requirements: Vue 3+

Configure Auth0

Get Your Application Keys

When you signed up for Auth0, a new application was created for you, or you could have created a new one. You will need some details about that application to communicate with Auth0. You can get these details from the Application Settings section in the Auth0 dashboard.

App Dashboard

You need the following information:

  • Domain
  • Client ID

Configure Callback URLs

A callback URL is a URL in your application where Auth0 redirects the user after they have authenticated. The callback URL for your app must be added to the Allowed Callback URLs field in your Application Settings. If this field is not set, users will be unable to log in to the application and will get an error.

Configure Logout URLs

A logout URL is a URL in your application that Auth0 can return to after the user has been logged out of the authorization server. This is specified in the returnTo query parameter. The logout URL for your app must be added to the Allowed Logout URLs field in your Application Settings. If this field is not set, users will be unable to log out from the application and will get an error.

Configure Allowed Web Origins

You need to add the URL for your app to the Allowed Web Origins field in your Application Settings. If you don't register your application URL here, the application will be unable to silently refresh the authentication tokens and your users will be logged out the next time they visit the application, or refresh the page.

Install the SDK

Install the Auth0 Vue SDK using npm:

npm install @auth0/auth0-vue

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Register the plugin

To use the SDK in your Vue application, register the plugin with your Vue application by passing the return value of createAuth0 to app.use().

import { createAuth0 } from '@auth0/auth0-vue';

const app = createApp(App);

app.use(
  createAuth0({
    domain: "YOUR_DOMAIN",
    client_id: "YOUR_CLIENT_ID",
    redirect_uri: window.location.origin
  })
);

app.mount('#app');

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The plugin will register the SDK using both provide and app.config.globalProperties, allowing the SDK to be used with both the Composition API and Options API.

Add Login to Your Application

To add login to your application, use the loginWithRedirect function that is exposed on the return value of useAuth0, which you can access in your component's setup function.

<template>
  <div>
    <button @click="login">Log in</button>
  </div>
</template>
<script>
  import { useAuth0 } from '@auth0/auth0-vue';

  export default {
    setup() {
      const { loginWithRedirect } = useAuth0();

      return {
        login: () => {
          loginWithRedirect();
        }
      };
    }
  };
</script>

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The loginWithRedirect function will redirect the user to Auth0, and redirect them back to the redirect_uri (provided when calling createAuth0()) after entering their credentials.

Using the Options API

If you are using the Options API, you can use the same loginWithRedirect method from the global $auth0 property through the this accessor.

<template>
  <div>
    <button @click="login">Log in</button>
  </div>
</template>

<script>
  export default {
    methods: {
      login() {
        this.$auth0.loginWithRedirect();
      }
    }
  };
</script>

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Add Logout to Your Application

Use the logout function that is exposed on the return value of useAuth0, which you can access in your component's setup function, to log the user out of your application.

<template>
  <div>
    <button @click="logout">Log out</button>
  </div>
</template>
<script>
  import { useAuth0 } from '@auth0/auth0-vue';

  export default {
    setup() {
      const { logout } = useAuth0();

      return {
        logout: () => {
          logout({ returnTo: window.location.origin });
        }
      };
    }
  };
</script>

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The logout() function will redirect the user to Auth0 to ensure their session is ended with Auth0 as well. Once the user is logged out successfully, they will be redirected back to the specified returnTo parameter.

Using the Options API

If you're using the Options API, you can use the same logout method from the global $auth0 property through the this accessor.

<template>
  <div>
    <button @click="logout">Log out</button>
  </div>
</template>

<script>
  export default {
    methods: {
      logout() {
        this.$auth0.logout({ returnTo: window.location.origin });
      }
    }
  };
</script>

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Show User Profile Information

Once the user authenticates, the SDK extracts the user's profile information and stores it in memory. It can be accessed by using the reactive user property exposed by the return value of useAuth0, which you can access in your component's setup function.

<template>
  <div>
    <h2>User Profile</h2>
    <button @click="login">Log in</button>
    <pre v-if="isAuthenticated">
        <code>{{ user }}</code>
      </pre>
  </div>
</template>
<script>
  import { useAuth0 } from '@auth0/auth0-vue';

  export default {
    setup() {
      const { loginWithRedirect, user, isAuthenticated } = useAuth0();

      return {
        login: () => {
          loginWithRedirect();
        },
        user,
        isAuthenticated
      };
    }
  };
</script>

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Using the Options API

If you're using the Options API, you can use the same reactive user property from the global $auth0 property through the this accessor.

<template>
  <div>
    <h2>User Profile</h2>
    <button @click="login">Log in</button>
    <pre>
      <code>{{ user }}</code>
    </pre>
  </div>
</template>

<script>
  export default {
    data: function () {
      return {
        user: this.$auth0.user
      };
    },
    methods: {
      login() {
        this.$auth0.loginWithRedirect();
      }
    }
  };
</script>

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