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Email & Password Based Authentication Using Solid.js & Altogic

You can access the full source code on our example repository.

Introduction

Altogic is a Backend as a Service (BaaS) platform and provides a variety of services in modern web and mobile development. Most modern applications using Solid.js or other libraries/frameworks require knowing the identity of a user. And this necessity allows an app to securely save user data and session in the cloud and provide more personalized functionalities and views to users.

Altogic has an authentication service that integrates and implements well in JAMstack apps. It has a ready-to-use Javascript client library, and it supports many authentication providers such as email/password, phone number, magic link, and OAuth providers like Google, Facebook, Twitter, Github, Apple etc.,

In this tutorial, we will implement email/password authentication with Solid.js and take a look at how as a Solid.js developer, we build applications and integrate with Altogic Authentication.

After completion of this tutorial, you will learn the following:

  • How to create sample screens to display forms like login and signup.
  • How to create a home screen and authorize only logged-in users.
  • How to create an authentication flow by conditionally rendering between these pages whether a user is logged in.
  • How to authenticate users using the magic link
  • How to update user profile info and upload a profile picture
  • How to manage active sessions of a user
  • And we will integrate Altogic authentication with the email/password method.

If you are new to Vue applications, this tutorial is definitely for you to understand the basics and even advanced concepts.

How email-based sign-up works in Altogic

By default, when you create an app in Altogic, email-based authentication is enabled. In addition, during email-based authentication, the email address of the user is also verified. Below you can find the flow of email and password-based sign-up process.

Email & Password based authentication flow
Email & Password Based Authentication Flow

If email verification is disabled, then after step 2, Altogic immediately returns a new session to the user, meaning that steps after step #2 in the above flow are not executed. You can easily configure email-based authentication settings from the App Settings > Authentication in Altogic Designer. One critical parameter you need to specify is the Redirect URL, you can customize this parameter from App Settings > Authentication. Finally, you can customize the email message template from the App Settings > Authentication > Message Templates.

note

For frontend apps that use server-side rendering, the session token needs to be stored in an HTTP cookie so that the client browser and the frontend server can exchange session information. Otherwise, the session information can be lost, and the Altogic Client library methods that require a session token can fail.

Prerequisites

To complete this tutorial, make sure you have installed the following tools and utilities on your local development environment.

Creating an Altogic App

We will use Altogic as a backend service platform, so let’s visit Altogic Designer and create an account.

Altogic Dashboard
Altogic Workspace

After creating an account, you will see the workspace where you can access your apps.

Click + New app and follow the instructions;

  1. In the App name field, enter a name for the app.
  2. Enter your subdomain.
  3. Choose the deployment location.
  4. And select your free execution environment pricing plan.
Create an Altogic App
Create an Application

Then click Next and select Basic template. This template creates a default user data model for your app which is required by Altogic Client Library to store user data and manage authentication. You can add additional user fields to this data model (e.g., name, surname, gender, birthdate) and when calling the signUpWithEmail method of the client library you can pass these additional data.

Choose Template
Choose Template
tip

If you do not select the basic template, instead selected the blank app template the user data model will not be created for your app. In order to use the Altogic Client Library's authentication methods you need a user data model to store the user data. You can easily create a new data model manually and from the App Settings > Authentication mark this new data model as your user data model.

Then click Next to confirm and create an app.

Awesome! We have created our application; now click/tap on the newly created app to launch the Designer. In order to access the app and use the Altogic client library, we should get envUrl and clientKey of this app. You can use any one of the API base URLs specified for your app environment as your envUrl.

Click the Home icon at the left sidebar to copy the envUrl and clientKey.

Client Library Keys
Client Key & Enviroment URL

Once the user is created successfully, our Solid.js app will route the user to the Verification page, and a verification email will be sent to the user's email address. When the user clicks the link in the mail, the user will navigate to the redirect page to grant authentication rights. After successfully creating a session on the Redirect page, users will be redirected to the Home page.

info

If you want, you can deactivate or customize the mail verification from App Settings -> Authentication in Altogic Designer.

Verification Mail Settings
Email & Authentication Settings

Create a Solid Project

First, we need to create a new Solid app. Open your terminal and run the following command to create a new Solid app.

npx degit solidjs/templates/js altogic-auth-solidjs

Open the project in VSCode

code altogic-auth-solidjs

Integrating With Altogic

Our backend and frontend is now ready and running on the server. ✨

Now, we can install the Altogic client library to our Solid app to connect our frontend with the backend.

# using npm
npm install altogic
# OR is using yarn
yarn add altogic

Let’s create a libs/ folder inside the src/ directory to add altogic.js file.

src/libs/altogic.js
import { createClient } from 'altogic';

const ENV_URL = ''; // replace with your envUrl
const CLIENT_KEY = ''; // replace with your clientKey

const altogic = createClient(ENV_URL, CLIENT_KEY, {
signInRedirect: '/login',
});

export default altogic;

Replace ENV_URL and CLIENT_KEY which is shown in the Home view of Altogic Designer.

info

signInRedirect is the sign in page URL to redirect the user when user's session becomes invalid. Altogic client library observes the responses of the requests made to your app backend. If it detects a response with an error code of missing or invalid session token, it can redirect the users to this signin url.

Create Pages Component

Let's create a folder named pages/ inside the src/ directory.

Then create some pages as below:

  • Home.jsx
  • Login.jsx
  • Register.jsx
  • LoginWithMagicLink.jsx
  • Profile.jsx
  • AuthRedirect.jsx

Home Page

In this page we will show some buttons to navigate to different pages.

src/pages/Home.jsx
import { A } from '@solidjs/router';

export default function Home() {
return (
<div class="flex items-center justify-center gap-4 h-screen">
<A href="/login-with-magic-link" class="border px-4 py-2 font-medium text-xl">
Login With Magic Link
</A>
<A href="/login" class="border px-4 py-2 font-medium text-xl">
Login
</A>
<A href="/register" class="border px-4 py-2 font-medium text-xl">
Register
</A>
</div>
);
}

Login Page

In this page, we will show a form to log in with email and password. We will use Altogic's altogic.auth.signInWithEmail() function to sign-in.

src/pages/Login.jsx
import { A, useNavigate } from '@solidjs/router';
import { batch, createSignal, For } from 'solid-js';
import altogic from '../libs/altogic';
import { useAuth } from '../context/AuthContext';

export default function Login() {
const [email, setEmail] = createSignal('');
const [password, setPassword] = createSignal('');
const [errors, setErrors] = createSignal(null);
const [loading, setLoading] = createSignal(false);
const navigate = useNavigate();
const [_, { setUser, setSession }] = useAuth();

const handleSubmit = async e => {
e.preventDefault();
setErrors(null);
setLoading(true);
const { session, errors: apiErrors, user } = await altogic.auth.signInWithEmail(email(), password());
setLoading(false);

if (apiErrors) {
return setErrors(apiErrors);
}

batch(() => {
setEmail('');
setPassword('');
setUser(user);
setSession(session);
});

navigate('/profile');
};

return (
<section class="flex flex-col items-center justify-center h-96 gap-4">
<form onSubmit={handleSubmit} class="flex flex-col gap-2 w-full md:w-96">
<h1 class="self-start text-3xl font-bold">Login to your account</h1>

{errors() && (
<div class="bg-red-600 text-white text-[13px] p-2">
<For each={errors().items}>{error => <p>{error.message}</p>}</For>
</div>
)}

<input
value={email()}
onInput={e => setEmail(e.currentTarget.value)}
type="email"
placeholder="Type your email"
required
/>
<input
value={password()}
onInput={e => setPassword(e.currentTarget.value)}
type="password"
placeholder="Type your password"
required
/>
<div class="flex justify-between gap-4">
<A class="text-indigo-600" href="/register">
Don't have an account? Register now
</A>
<button
disabled={loading()}
type="submit"
class="border py-2 px-3 border-gray-500 hover:bg-gray-500 hover:text-white transition shrink-0"
>
Login
</button>
</div>
</form>
</section>
);
}

In this page, we will show a form to log in with Magic Link with only email. We will use Altogic's altogic.auth.sendMagicLinkEmail() function to sending magic link to user's email.

When the user clicks on the magic link in the email, Altogic verifies the validity of the magic link and, if successful, redirects the user to the redirect URL specified in your app authentication settings with an access token in a query string parameter named access_token The magic link flows in a similar way to the sign-up process. We use the getAuthGrant() method to create a new session and associated sessionToken.

src/pages/LoginWithMagicLink.jsx
import { A } from '@solidjs/router';
import { batch, createSignal, For } from 'solid-js';
import altogic from '../libs/altogic';

export default function LoginWithMagicLink() {
const [email, setEmail] = createSignal('');
const [isDone, setIsDone] = createSignal(false);
const [loading, setLoading] = createSignal(false);
const [errors, setErrors] = createSignal(null);

const submitHandler = async e => {
e.preventDefault();

batch(() => {
setIsDone(false);
setLoading(true);
setErrors(null);
});

const { errors: apiErrors } = await altogic.auth.sendMagicLinkEmail(email());
setLoading(false);

if (apiErrors) {
return setErrors(apiErrors);
}

setIsDone(true);
setEmail('');
};

return (
<section class="flex flex-col items-center justify-center h-96 gap-4">
<form onSubmit={submitHandler} class="flex flex-col gap-2 w-full md:w-96">
<h1 class="self-start text-3xl font-bold">Login with magic link</h1>

{isDone() && (
<div class="bg-green-600 text-white text-[13px] p-2">
We have sent you a magic link. Please check your email.
</div>
)}

{errors() && (
<div class="bg-red-600 text-white text-[13px] p-2">
<For each={errors().items}>{error => <p>{error.message}</p>}</For>
</div>
)}

<input
value={email()}
onInput={e => setEmail(e.target.value)}
name="email"
type="email"
placeholder="Type your email"
required
/>
<div class="flex justify-between gap-4 items-start">
<A href="/register" class="text-indigo-600">
Don't have an account? Register now
</A>
<button
disabled={loading()}
type="submit"
class="border py-2 px-3 border-gray-500 hover:bg-gray-500 hover:text-white transition shrink-0"
>
Send magic link
</button>
</div>
</form>
</section>
);
}

Register Page

In this page, we will show a form to sign up with email and password. We will use Altogic's altogic.auth.signUpWithEmail() function to sign-up.

We will save session and user info to state if the api returns session. Then, user will be redirected to profile page.

If signUpWithEmail does not return session, it means user need to confirm email, so we will show the success message.

note

signUpWithEmail function can accept optional third parameter data to save the user's profile. We will save the user's name to the database in this example.

src/pages/Register.jsx
import { A, useNavigate } from '@solidjs/router';
import { batch, createSignal, For } from 'solid-js';
import altogic from '../libs/altogic';
import { useAuth } from '../context/AuthContext';

export default function Register() {
const [name, setName] = createSignal('');
const [email, setEmail] = createSignal('');
const [password, setPassword] = createSignal('');
const [errors, setErrors] = createSignal(null);
const [loading, setLoading] = createSignal(false);
const [needToVerify, setNeedToVerify] = createSignal(false);
const [_, { setUser, setSession }] = useAuth();

const navigate = useNavigate();

const handleSubmit = async e => {
e.preventDefault();
setErrors(null);
setLoading(true);
const { errors: apiErrors, user, session } = await altogic.auth.signUpWithEmail(email(), password(), name());
setLoading(false);

if (apiErrors) {
return setErrors(apiErrors);
}

if (!session) {
setNeedToVerify(true);
batch(() => {
setName('');
setEmail('');
setPassword('');
});
return;
}

setUser(user);
setSession(session);
navigate('/profile');
};

return (
<section class="flex flex-col items-center justify-center h-96 gap-4">
<form onSubmit={handleSubmit} class="flex flex-col gap-2 w-full md:w-96">
<h1 class="self-start text-3xl font-bold">Create an account</h1>
{needToVerify() && (
<div class="bg-green-500 text-white p-2">
Your account has been created. Please check your email to verify your account.
</div>
)}
{errors() && (
<div class="bg-red-600 text-white text-[13px] p-2">
<For each={errors().items}>{error => <p>{error.message}</p>}</For>
</div>
)}
<input
value={name()}
onInput={e => setName(e.target.value)}
autocomplete="given-name"
type="text"
placeholder="Type your name"
required
/>
<input
value={email()}
onInput={e => setEmail(e.target.value)}
autocomplete="email"
type="email"
placeholder="Type your email"
required
/>
<input
value={password()}
onInput={e => setPassword(e.target.value)}
type="password"
autocomplete="new-password"
placeholder="Type your password"
required
/>
<div class="flex justify-between gap-4">
<A class="text-indigo-600" href="/login">
Already have an account? Login now
</A>
<button
disabled={loading()}
type="submit"
class="border py-2 px-3 border-gray-500 hover:bg-gray-500 hover:text-white transition shrink-0"
>
Create account
</button>
</div>
</form>
</section>
);
}

Profile Page

In this page, we will show the user's profile.

src/pages/Profile.jsx
import Avatar from '../components/Avatar';
import UserInfo from '../components/UserInfo';
import Sessions from '../components/Sessions';
import { useAuth } from '../context/AuthContext';
import altogic from '../libs/altogic';
import { useNavigate } from '@solidjs/router';

export default function Profile() {
const [, { setUser, setSession }] = useAuth();
const navigate = useNavigate();
const logout = async () => {
await altogic.auth.signOut();
setUser(null);
setSession(null);
navigate('/login');
};

return (
<div>
<section class="h-screen py-4 space-y-4 flex flex-col text-center items-center">
<Avatar />
<UserInfo />
<Sessions />
<button onClick={logout} class="bg-gray-400 rounded py-2 px-3 text-white">
Logout
</button>
</section>
</div>
);
}

Auth Redirect Page

In this page we use the getAuthGrant() method to create a new session and associated sessionToken for verify email or sign in with magic link.

src/pages/AuthRedirect.jsx
import { A, useLocation, useNavigate, useSearchParams } from '@solidjs/router';
import { createSignal, For, onMount } from 'solid-js';
import altogic from '../libs/altogic';
import { useAuth } from '../context/AuthContext';

export default function AuthRedirect() {
const { access_token } = useLocation().query;
const navigate = useNavigate();
const [errors, setErrors] = createSignal(null);
const [, { setUser, setSession }] = useAuth();

onMount(() => {
altogic.auth.getAuthGrant(access_token).then(({ user, session, errors: apiErrors }) => {
if (apiErrors) {
return setErrors(apiErrors);
}

setUser(user);
setSession(session);
navigate('/profile');
});
});

return (
<section class="h-screen flex flex-col gap-4 justify-center items-center">
{errors() ? (
<div class="text-center">
<For each={errors().items}>{error => <p class="text-red-500 text-3xl">{error.message}</p>}</For>
</div>
) : (
<div class="text-center">
<p class="text-6xl">Please wait</p>
<p class="text-3xl">You're redirecting to your profile...</p>
</div>
)}
</section>
);
}

Create Routes

Install Solid Router

We will use the @solidjs/router to create different routes in our app. Let’s install it.

npm install @solidjs/router

Define Routes

Our pages are ready. Now we need to define our routes.

Let's create a folder named router/ inside the src/ directory.

Then create a file named index.jsx inside the router/ directory and paste the following code:

src/router/index.jsx
import { Navigate, Outlet, Route, Routes } from '@solidjs/router';
import { useAuth } from '../context/AuthContext';
import Home from '../pages/Home';
import Login from '../pages/Login';
import Register from '../pages/Register';
import Profile from '../pages/Profile';
import LoginWithMagicLink from '../pages/LoginWithMagicLink';
import AuthRedirect from '../pages/AuthRedirect';

export default function Router() {
return (
<Routes>
<Route path="" component={PublicRoute}>
<Route path="/" component={Home} />
<Route path="/login" component={Login} />
<Route path="/register" component={Register} />
<Route path="/login-with-magic-link" component={LoginWithMagicLink} />
</Route>
<Route path="" component={ProtectedRoute}>
<Route path="/profile" component={Profile} />
</Route>
<Route path="/auth-redirect" component={AuthRedirect} />
</Routes>
);
}

function ProtectedRoute() {
const [{ user, session }] = useAuth();
if (user && session) {
return <Outlet />;
}
return <Navigate href="/login" />;
}

function PublicRoute() {
const [{ user, session }] = useAuth();
if (!user && !session) {
return <Outlet />;
}
return <Navigate href="/profile" />;
}

Then we need to update the App.jsx file to use the Router component.

import Router from './router';

export default function App() {
return (
<main class="container mx-auto px-4">
<Router />
</main>
);
}

Create Auth Context

We will use the AuthContext to store the user's data and session.

Let's create a folder named context/ inside the src/ directory.

Then create a file named AuthContext.jsx inside the context/ directory and paste the following code:

src/context/AuthContext.jsx
import { createContext, useContext } from 'solid-js';
import { createStore } from 'solid-js/store';
import altogic from '../libs/altogic';

const defaultState = {
user: altogic.auth.getUser(),
session: altogic.auth.getSession(),
};

const AuthContext = createContext([
defaultState,
{
setUser: () => undefined,
setSession: () => undefined,
},
]);

export const AuthProvider = props => {
const [state, setState] = createStore(defaultState);

const setUser = user => {
setState('user', user);
altogic.auth.setUser(user);
};
const setSession = session => {
setState('session', session);
altogic.auth.setSession(session);
};

return <AuthContext.Provider value={[state, { setUser, setSession }]}>{props.children}</AuthContext.Provider>;
};

export const useAuth = () => useContext(AuthContext);

Then we need to update the index.jsx file to use the AuthProvider component.

src/index.jsx
/* @refresh reload */
import { render } from 'solid-js/web';
import App from './App';
import { Router } from '@solidjs/router';
import './assets/app.css';
import { AuthProvider } from './context/AuthContext';

render(
() => (
<Router>
<AuthProvider>
<App />
</AuthProvider>
</Router>
),
document.getElementById('root')
);

Create Components

Let's create a folder named components/ inside the src/ directory.

Then create these files inside the components/ directory:

  • Avatar.jsx
  • Sessions.jsx
  • UserInfo.jsx

Upload Profile Picture

Open Avatar.js and paste the below code to create an avatar for the user.

For convenience, we will be using the user's _id as the name of the uploaded file and upload the profile picture to the root directory of our app storage. If needed you can create different buckets for each user or a generic bucket to store all provided photos of users. The Altogic Client Library has all the methods to manage buckets and files.

src/components/Avatar.jsx
import altogic from '../libs/altogic';
import { createMemo, createSignal } from 'solid-js';
import { useAuth } from '../context/AuthContext';

export default function Avatar() {
const [loading, setLoading] = createSignal(false);
const [errorMessage, setErrorMessage] = createSignal(null);
const [{ user }, { setUser }] = useAuth();

const userPicture = createMemo(() => user?.profilePicture ?? `https://ui-avatars.com/api/?name=${user?.name}`);

async function handleChange(e) {
const file = e.target.files[0];
e.target.value = null;
if (!file) return;
try {
setLoading(true);
setErrorMessage(null);
const { publicPath } = await updateProfilePicture(file);
const user = await updateUser({ profilePicture: publicPath });
setUser(user);
} catch (e) {
setErrorMessage(e.message);
} finally {
setLoading(false);
}
}
async function updateProfilePicture(file) {
const { data, errors } = await altogic.storage.bucket('root').upload(`user_${user?._id}`, file);
if (errors) throw new Error("Couldn't upload file");
return data;
}
async function updateUser(data) {
const { data: userFromDB, errors } = await altogic.db.model('users').object(user?._id).update(data);
if (errors) throw new Error("Couldn't update user");
return userFromDB;
}
return (
<div>
<figure class="flex flex-col gap-4 items-center justify-center py-2">
<picture class="border rounded-full w-24 h-24 overflow-hidden">
<img class="object-cover w-full h-full" src={userPicture()} alt={user?.name} />
</picture>
</figure>
<div class="flex flex-col gap-4 justify-center items-center">
<label class="border p-2 cursor-pointer">
<span>{loading() ? 'Uploading...' : 'Change Avatar'}</span>
<input
onChange={handleChange}
name="picture"
disabled={loading()}
class="hidden"
type="file"
accept="image/*"
/>
</label>
{errorMessage() && <p class="text-red-500">{errorMessage()}</p>}
</div>
</div>
);
}

Update User Info

In this component, we will use Altogic's database operations to update the user's name.

src/components/UserInfo.jsx
import { useAuth } from '../context/AuthContext';
import { createSignal } from 'solid-js';
import altogic from '../libs/altogic';

export default function UserInfo() {
let input;
const [{ user }, { setUser }] = useAuth();
const [changeMode, setChangeMode] = createSignal(false);

const openChangeMode = () => {
setChangeMode(true);
input.focus();
};

const saveName = async e => {
if (e.key !== 'Enter') return;
const { data, errors } = await altogic.db.model('users').object(user._id).update({ name: e.target.value });
if (errors) throw errors;
setUser(data);
setChangeMode(false);
};

return (
<section class="border p-4 w-full">
{changeMode() ? (
<div class="flex items-center justify-center">
<input
ref={input}
value={user.name}
onKeyPress={saveName}
type="text"
name="name"
class="text-3xl text-center"
/>
</div>
) : (
<div class="space-y-4">
<h1 class="text-3xl">Hello, {user?.name}</h1>
<button onClick={openChangeMode} class="border p-2">
Change name
</button>
</div>
)}
</section>
);
}

Manage Sessions

In this component, we will use Altogic's altogic.auth.getAllSessions() to get the user's sessions and delete them.

src/components/Sessions.jsx
import { createSignal, For, onMount } from 'solid-js';
import altogic from '../libs/altogic';
import { useAuth } from '../context/AuthContext';

export default function Sessions() {
const [sessions, setSessions] = createSignal([]);
const [{ session }] = useAuth();

onMount(() => {
altogic.auth.getAllSessions().then(({ sessions: allSessions, errors }) => {
if (errors) throw errors;
setSessions(allSessions.map(s => ({ ...s, isCurrent: s.token === session.token })));
});
});

const logoutSession = async session => {
const { errors } = await altogic.auth.signOut(session.token);
if (!errors) setSessions(prev => prev.filter(s => s.token !== session.token));
};

return (
<div class="border p-4 space-y-4">
<p class="text-3xl">All Sessions</p>
<ul class="flex flex-col gap-2">
<For each={sessions()}>
{session => (
<li class="flex justify-between gap-12">
<div>
{session?.isCurrent ? (
<span>Current Sessions</span>
) : (
<span>
<strong>Device name: </strong>
{session?.userAgent?.device?.family}
</span>
)}
</div>
<div class="flex items-center gap-2">
<span>{new Date(session.creationDtm).toLocaleDateString('en-US')}</span>
{!session?.isCurrent && (
<button
onClick={() => logoutSession(session)}
class="border grid place-items-center p-2 h-8 w-8 aspect-square leading-none"
>
X
</button>
)}
</div>
</li>
)}
</For>
</ul>
</div>
);
}

Conclusion

Congratulations!✨

You had completed the most critical part of the Authentication flow, which includes private routes, sign-up, sign-in, and sign-out operations.

If you have any questions about Altogic or want to share what you have built, please post a message in our community forum or discord channel.