How to Add Authentication to Your Vue App Using Okta

This tutorial guides you through building a Vue.js application secured by Okta's OpenID Connect (OIDC) API, including CRUD operations via a backend REST API. We'll use Vue.js with vue-cli, vue-router, and the Okta Vue SDK, along with Node.js, Express, Okta JWT Verifier, Sequelize, and Epilogue on the backend.

Key Features:

• Secure authentication using Okta's OIDC API.
• Vue.js project scaffolding with vue-cli's PWA template.
• Okta Vue SDK for authentication flow management and route protection.
• Backend REST API server (Node, Express, Sequelize) for CRUD operations.
• Dynamic navigation based on authentication status.
• Comprehensive testing of authentication and CRUD functionality.

About Vue.js:

Vue.js is a user-friendly and powerful JavaScript framework ideal for building high-performance web applications.

This tutorial creates a frontend SPA (homepage, login/logout, posts manager) and a backend REST API server (Express, Sequelize, Epilogue). Okta's OIDC handles authentication via the Okta Vue SDK. The server uses JWT-based authentication, validated by Okta's JWT Verifier middleware. Exposed endpoints (GET /posts, GET /posts/:id, POST /posts, PUT /posts/:id, DELETE /posts/:id) all require a valid access token.

Setting up Your Vue.js App:

Use vue-cli to scaffold the project:

npm install -g vue-cli
vue init pwa my-vue-app
cd ./my-vue-app
npm install
npm run dev

This creates a PWA with features like hot reloading and unit testing. Access it at http://localhost:8080.

Installing Bootstrap:

Enhance the UI with Bootstrap-Vue:

npm i --save bootstrap-vue bootstrap

Modify ./src/main.js to include Bootstrap-Vue and its CSS.

Okta Authentication Integration:

1. Create an OIDC application in your Okta developer account.
2. Install the Okta Vue SDK: npm i --save @okta/okta-vue
3. Configure the router (./src/router/index.js) with Okta's Auth plugin, replacing placeholders with your Okta domain and client ID. Implement authRedirectGuard for route protection.

Customizing the App Layout:

Modify ./src/App.vue to dynamically show "Login" or "Logout" based on the user's authentication status using v-if. Implement login and logout methods using the $auth object provided by the Okta Vue SDK.

Creating the Backend REST API Server:

1. Install dependencies: npm i --save express cors @okta/jwt-verifier sequelize sqlite3 epilogue axios
2. Create ./src/server.js. This file sets up Express, Sequelize (using SQLite for simplicity), Epilogue for REST endpoint generation, and Okta JWT Verifier middleware for authentication.

Completing the Posts Manager Component:

Create ./src/api.js for centralized API interaction. This helper handles adding the access token to API requests. Then, complete ./src/components/PostsManager.vue to implement CRUD operations using the api helper functions.

Testing the Application:

Run the server (node ./src/server) and the frontend (npm run dev). Test authentication and CRUD functionality.

Further Resources:

• Vue.js
• [Okta Developer Blog](Original blog post URL - replace with actual URL if available)
• GitHub Repository

(FAQs section removed as it's a repetition of information already covered in the tutorial.)

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