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+---
+title: 'Sessions and Authentication'
+description: "Authentication is an extremely common requirement in web apps. This recipe will show you how to implement basic user registration and authentication in your Nuxt app."
+---
+
+
+## Introduction
+
+In this recipe we'll be setting up user registration, login, sessions, and authentication in a full-stack Nuxt app using [Nuxt Auth Utils](https://github.com/Atinux/nuxt-auth-utils) which provides convenient utilities for managing client-side and server-side session data. We'll install and use this to get the core session management functionality we're going to need to manage user logins. For the database ORM we'll be using [Drizzle](https://orm.drizzle.team/) with the built-in [Nitro SQL database](https://nitro.unjs.io/guide/database), but you can use any ORM or database connection strategy you prefer.
+
+You'll need a `users` table in your database with the following columns:
+- `id` (int, primary key, auto increment)
+- `email` (varchar)
+- `password` (varchar)
+
+## Steps
+
+### 1. Install nuxt-auth-utils
+
+Install the [nuxt-auth-utils](https://github.com/Atinux/nuxt-auth-utils) module using the `nuxi` CLI.
+
+```bash
+npx nuxi@latest module add auth-utils
+```
+
+### 1a. (Optional) Add a session encryption key
+
+Session cookies are encrypted using a key from the `.env` file. This key will be added to your `.env` automatically when running in development mode for the first time. However, you'll need to add this to your production environment before deploying.
+
+```dotenv [.env]
+NUXT_SESSION_PASSWORD=password-with-at-least-32-characters
+```
+
+### 2. Create a registration page
+
+The first page we'll need is a page for users to register and create new accounts. Create a new Vue page in your Nuxt app at `/pages/register.vue` for user registration. This page should have a form with fields for email and password. We'll intercept the form submission using `@submit.prevent` and use the [`$fetch`](/docs/getting-started/data-fetching#fetch) utility to post the data to `/api/register`. This form POST will be received by Nuxt in an API route which we will set up next.
+
+If the request is successful, we'll navigate to the (soon to be created) `/users` page, which will be guarded and only visible to logged in users.
+
+Here's an example registration form for reference:
+
+```vue [pages/register.vue]
+
+
+
+
+
+
+```
+
+### 3. Create an API route for registration
+
+With the user interface created we'll need to add a route to receive the registration form data. This route should accept a POST request with the email and password in the request body. It should hash the password and insert the user into the database. This route will only accept POST requests, so we'll follow the instructions for [API route methods](https://nuxt.com/docs/guide/directory-structure/server#matching-http-method) and name the file with `*.post.ts` to restrict the endpoint to only accept POST.
+
+After we've successfully registered the user and stored the record in the database we can log them in by calling the `replaceUserSession` utility function from auth-utils. This utility function is automatically imported by the auth-utils module. We're using `replaceUserSession` here to make sure that any existing session data is cleared and replaced with the user login we're performing now.
+
+The example file below is a very simple example of registration. You would probably want to add some error handling and nice response messages.
+
+```typescript [/server/api/register.post.ts]
+import users from "~/database/schema/users";
+import getDatabase from "~/database/database";
+import bcrypt from "bcrypt";
+
+export default defineEventHandler(async (event) => {
+ const body = await readBody(event);
+
+ const db = await getDatabase();
+
+ // has the password before creating the user record
+ const passwordHash = bcrypt.hashSync(body.password, 12);
+ await db.insert(users).values({
+ name: body.name,
+ email: body.email,
+ password: passwordHash,
+ });
+
+ // get the user record we just created
+ const user = (await db.select().from(users).where(eq(users.email, body.email)).limit(1))[0];
+ // log the user in as the user that was just created
+ await replaceUserSession(event, {
+ user: {
+ id: user.id,
+ name: user.name,
+ },
+ loggedInAt: new Date(),
+ });
+
+
+ await auth.login(event, user);
+});
+```
+
+### 4. Create a login page
+
+When registered users return to your site they'll need to be able to log back in. Create a new page at `/pages/login.vue` in your Nuxt app for user login. This page should have a form with fields for email and password and should submit a POST request to `/api/login`.
+
+Like the registration page, we'll intercept the form submission using `@submit.prevent` and use [`$fetch`](https://nuxt.com/docs/getting-started/data-fetching#fetch) to post the data to `/api/login`.
+
+This is a very simple login form example, so you'd definitely want to add more validation and error checking in a real-world application.
+
+```vue [/pages/login.vue]
+
+
+
+
+
+
+```
+
+### 5. Create an API route for login
+
+With the login form created, we need to create an API route to handle the login request. This route should accept a POST request with the email and password in the request body and check the email and password against the database. If the user and password match, we'll set a session cookie to log the user in.
+
+This server API route should be at `/server/api/auth/login.post.ts`. Just like the registration form endpoint, suffixing the filename in `.post.ts.` means that this handler will only respond to post requests.
+
+```typescript [/server/api/auth/login.post.ts]
+import users from "~/database/schema/users";
+import getDatabase from "~/database/database";
+import { eq } from "drizzle-orm";
+import bcrypt from "bcrypt";
+
+export default defineEventHandler(async (event) => {
+ const db = await getDatabase();
+
+ const foundUser = (
+ await db
+ .select({ id: users.id, name: users.name, email: users.email, password: users.password })
+ .from(users)
+ .where(eq(users.email, email))
+ .limit(1)
+ )?.[0];
+
+ // compare the password hash
+ if (!foundUser || !bcrypt.compareSync(password, foundUser.password)) {
+ // return an error if the user is not found or the password doesn't match
+ throw createError({
+ statusCode: 401,
+ statusMessage: "Invalid email or password",
+ });
+ }
+
+ // log in as the selected user
+ await replaceUserSession(event, {
+ user: {
+ id: user.id,
+ name: user.name,
+ },
+ loggedInAt: new Date(),
+ });
+});
+
+
+```
+
+The user should now be logged in! With the session set, we can get the current user session in any API route or page by calling `getUserSession(event)` which is auto-imported as a util function from the `nuxt-auth-utils` package.
+
+### 6. Create a logout API route
+
+Users need to be able to log out, so we should create an API route to allow them to do this. This should require post request as well, just like login. We'll clear the session when this endpoint is called.
+
+We'll use the `clearUserSession` from the `auth-utils` module to log the user out and clear the session data. This function is automatically imported from the module by Nuxt, so we don't need to manually import it.
+
+```typescript [server/api/auth/logout.post.ts]
+export default defineEventHandler(async (event) => {
+ // Clear the current user session
+ await clearUserSession(event);
+});
+```
+
+### 7. Protect your server route
+
+Protecting server routes is key to making sure your data is safe. Client-side middleware is helpful for the user, but without server-side protection your data can still be accessed. Because of this, it is critical that we protect any API routes with sensitive data. For these sensitive routes, we should return a 401 error if the user is not logged in.
+
+The `auth-utils` module provides the `requireUserSession` utility function to help make sure that users are logged in and have an active session. We can use this to protect our different endpoints. Like many of the other utilities from the auth module, it is automatically imported in our server endpoints.
+
+In the example below, we use the `requireUserSession` utility function to protect the `/server/api/users.get.ts` server route. This route will only be accessible to logged-in users.
+
+```typescript [/server/api/users.get.ts]
+import getDatabase from "~/database/database";
+import users from "~/database/schema/users";
+import requireUserLoggedIn from "~/server/utils/requireUserLoggedIn";
+
+export default defineEventHandler(async (event) => {
+ // make sure the user is logged in
+ // This will throw a 401 error if the request doesn't come from a valid user session
+ await requireUserSession(event);
+
+ // If we make it here, the user is authenticated. It's safe to fetch and return data
+ const db = await getDatabase();
+
+ // Send back the list of users
+ const userList = await db.select({ name: users.name, id: users.id }).from(users).limit(10);
+
+ return userList;
+});
+```
+
+### 8. Create a client-side middleware to protect routes
+
+Our data is safe with the server-side route in place, but without doing anything else, unauthenticated users would probably get some odd data when trying to access the `/users` page. We should create a [client-side middleware](https://nuxt.com/docs/guide/directory-structure/middleware) to protect the route on the client side and redirect users to the login page.
+
+`nuxt-auth-utils` provides a convenient `useUserSession` composable which we'll use to check if the user is logged in, and redirect them if they are not.
+
+We'll create a middleware in the `/middleware` directory. Unlike on the server, client-side middleware is not automatically applied to all endpoints, and we'll need to specify where we want it applied.
+
+```typescript [/middleware/RedirectIfNotAuthenticated.ts]
+export default defineNuxtRouteMiddleware(() => {
+ // check if the user is logged in
+ const { loggedIn } = useUserSession();
+
+ // redirect the user to the login screen if they're not authenticated
+ if (!loggedIn.value) {
+ return navigateTo("/login");
+ }
+
+ return null;
+});
+```
+
+### 9. Protect a route with the client-side middleware
+
+Now that we have the client-side middleware to protect client-side routes, we can use it in any page to ensure that only logged-in users can access the route. Users will be redirected to the login page if they are not authenticated.
+
+We'll use [`definePageMeta`](https://nuxt.com/docs/api/utils/define-page-meta) to apply the middleware to the route that we want to protect.
+
+::important
+:warning: Remember that your data isn't really secure without server-side protection! Always secure your data server-side first before worrying about the client-side.
+::
+
+```vue [pages/users/index.vue]
+
+
+
+
+
Users List
+
+
+
+ -
+
+
{{ user.name }}
+
+
+
+
+