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Use SlashID with Remix

Learn how to use SlashID to easily add authentication, protected pages, and user management to your Remix application. This tutorial assumes you are using Remix v2 or later.


Before starting this tutorial you will need to sign up to SlashID and create an organization, once you've done this you'll find your organization ID in Settings -> General.

1. Install @slashid/remix

Once you have a Remix application ready to go, you need to install the SlashID Remix SDK. This SDK provides a prebuilt log-in & sign-up form, control components and hooks - tailor made for Remix.

npm install @slashid/remix

2. Create SlashID app primitives

In your Remix application create a file app/slashid.ts.

In this file create the SlashID application primitives and re-export them, you'll use them later.

import { createSlashIDApp } from '@slashid/remix'export const {  SlashIDApp,  slashIDRootLoader,  slashIDLoader} = createSlashIDApp({ oid: "YOUR_ORGANIZATION_ID" });

oid is your organization ID, you can find it in the SlashID console under Settings -> General.

3. Configure slashIDRootLoader

To configure SlashID in your Remix application you'll need to update your root loader. With a small change you'll have easy access to authentication in all of your Remix routes.

Import the slashIDRootLoader you created in the previous step, invoke it and export it as loader.

import { LoaderFunction } from "@remix-run/node";import {  Links,  LiveReload,  Meta,  Outlet,  Scripts,  ScrollRestoration,  useLoaderData,} from "@remix-run/react";import { slashIDRootLoader } from "~/slashid"; export const loader: LoaderFunction = slashIDRootLoader(); export default function App() {  return (    <html lang="en">      <head>        <meta charSet="utf-8" />        <meta name="viewport" content="width=device-width, initial-scale=1" />        <Meta />        <Links />      </head>      <body>        <Outlet />        <ScrollRestoration />        <Scripts />        <LiveReload />      </body>    </html>  );}

If you need to load additional data via the root loader, you can simply pass a loader function to slashIDRootLoader. You can even check for authentication right here in the root loader.

import { slashIDRootLoader } from "~/slashid"import { getUser } from '@slashid/remix'export const loader: LoaderFunction = slashIDRootLoader((args) => {  const user = getUser(args)  if (user) {    // the user is logged in  }  // fetch data  return {    hello: "world!" // your data  }});

4. Wrap your application body with <SlashIDApp>

In step 2 you created SlashIDApp, it provides authentication state to your React component tree. There is no configuration, just add it to your Remix application.

import { SlashIDApp } from '~/slashid'export default function App() {  return (    <html lang="en">      <head>        <meta charSet="utf-8" />        <meta name="viewport" content="width=device-width, initial-scale=1" />        <Meta />        <Links />      </head>      <body>        {/* Wrap the contents of your <body> with SlashIDApp */}        <SlashIDApp>          <Outlet />          <ScrollRestoration />          <Scripts />          <LiveReload />        </SlashIDApp>      </body>    </html>  );}

5. Create your log-in/sign-up page

SlashID offers a prebuilt form that works for both log-in and sign-up. Users with an account can log-in here and users without one need to simply complete the form to create their account.

import {  ConfigurationProvider,  Form,  type Factor,} from "@slashid/remix";const factors: Factor[] = [  { method: "email_link" }];export default function LogIn() {  return (    <div style={{ width: "500px" }}>      <ConfigurationProvider factors={factors}>        <Form />      </ConfigurationProvider>    </div>  );}

After the user has logged in, you might want to redirect them to another page. You can this with a loader.

When authentication has complete the form will tell the loader to run again, refreshing the authentication context, and triggering the redirect.

import { slashIDLoader } from '~/slashid'export const loader = slashIDLoader((args) => {  const user = getUser(args)  if (user) {    return redirect("index") // redirect to your desired destination  }  return {}})

6. Protecting your pages

Server side

To protect your routes you can use the slashIDLoader you created in step 2. This utility is a wrapper for your loaders that provides authentication state to your loader code.

You'll check if the user exists, and if not redirect them to the login page.

The useSlashID() hook provides authentication state & helper functions to your React code, here you'll implement logOut too.

import { slashIDLoader } from '~/slashid'import { getUser, useSlashID } from '@slashid/remix' export const loader = slashIDLoader((args) => {  const user = getUser(args)  if (!user) {    return redirect("login")  }  return {}})export default function Index() {  const { logOut } = useSlashID()  return (    <div>      <h1>Index</h1>      <p>You are logged in!</p>      <button onClick={logOut}>        Log out      </button>    </div>  )}

Client side

SlashID has several Control Components that allow you to conditionally show or hide content based on the users authentication state.

You'll implement <LoggedIn>, <LoggedOut>, and provide the option to log-out by implementing the logOut helper function from the useSlashID() hook.

import { LoggedIn, LoggedOut, useSlashID } from '@slashid/remix'import { useNavigate } from "@remix-run/react";export default function Index() {  const { logOut } = useSlashID()  const navigate = useNavigate();  return (    <div>      <LoggedIn>        You are logged in!        <button onClick={logOut}>          Log out        </button>      </LoggedIn>      <LoggedOut>        {navigate("login")}      </LoggedOut>    </div>  )}