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Version: 0.11.8

Username & Password

Wasp supports username & password authentication out of the box with login and signup flows. It provides you with the server-side implementation and the UI components for the client-side.

Setting Up Username & Password Authentication​

To set up username authentication we need to:

  1. Enable username authentication in the Wasp file
  2. Add the user entity
  3. Add the routes and pages
  4. Use Auth UI components in our pages

Structure of the main.wasp file we will end up with:

main.wasp
// Configuring e-mail authentication
app myApp {
  auth: { ... }
}
// Defining User entity
entity User { ... }
// Defining routes and pages
route SignupRoute { ... }
page SignupPage { ... }
// ...

1. Enable Username Authentication​

Let's start with adding the following to our main.wasp file:

main.wasp
app myApp {
  wasp: {
    version: "^0.11.0"
  },
  title: "My App",
  auth: {
    // 1. Specify the user entity (we'll define it next)
    userEntity: User,
    methods: {
      // 2. Enable username authentication
      usernameAndPassword: {},
    },
    onAuthFailedRedirectTo: "/login"
  }
}

Read more about the usernameAndPassword auth method options here.

2. Add the User Entity​

When username authentication is enabled, Wasp expects certain fields in your userEntity. Let's add these fields to our main.wasp file:

main.wasp
// 3. Define the user entity
entity User {=psl
    id                        Int           @id @default(autoincrement())
    username                  String        @unique
    password                  String
    // Add your own fields below
    // ...
psl=}

Read more about the userEntity fields here.

3. Add the Routes and Pages​

Next, we need to define the routes and pages for the authentication pages.

Add the following to the main.wasp file:

main.wasp
// ...
// 4. Define the routes
route LoginRoute { path: "/login", to: LoginPage }
page LoginPage {
  component: import { Login } from "@client/pages/auth.jsx"
}
route SignupRoute { path: "/signup", to: SignupPage }
page SignupPage {
  component: import { Signup } from "@client/pages/auth.jsx"
}

We'll define the React components for these pages in the client/pages/auth.tsx file below.

4. Create the Client Pages​

info

We are using Tailwind CSS to style the pages. Read more about how to add it here.

Let's create a auth.tsx file in the client/pages folder and add the following to it:

client/pages/auth.jsx
import { LoginForm } from "@wasp/auth/forms/Login";
import { SignupForm } from "@wasp/auth/forms/Signup";
import { Link } from "react-router-dom";

export function Login() {
  return (
    <Layout>
      <LoginForm />
      <br />
      <span className="text-sm font-medium text-gray-900">
        Don't have an account yet? <Link to="/signup">go to signup</Link>.
      </span>
    </Layout>
  );
}

export function Signup() {
  return (
    <Layout>
      <SignupForm />
      <br />
      <span className="text-sm font-medium text-gray-900">
        I already have an account (<Link to="/login">go to login</Link>).
      </span>
    </Layout>
  );
}

// A layout component to center the content
export function Layout({ children }) {
  return (
    <div className="w-full h-full bg-white">
      <div className="min-w-full min-h-[75vh] flex items-center justify-center">
        <div className="w-full h-full max-w-sm p-5 bg-white">
          <div>{children}</div>
        </div>
      </div>
    </div>
  );
}

We imported the generated Auth UI components and used them in our pages. Read more about the Auth UI components here.

Conclusion​

That's it! We have set up username authentication in our app. 🎉

Running wasp db migrate-dev and then wasp start should give you a working app with username authentication. If you want to put some of the pages behind authentication, read the using auth docs.

Customizing the Auth Flow​

The login and signup flows are pretty standard: they allow the user to sign up and then log in with their username and password. The signup flow validates the username and password and then creates a new user entity in the database.

Read more about the default username and password validation rules and how to override them in the using auth docs.

If you require more control in your authentication flow, you can achieve that in the following ways:

  1. Create your UI and use signup and login actions.
  2. Create your custom sign-up and login actions which uses the Prisma client, along with your custom code.

1. Using the signup and login actions​

login()​

An action for logging in the user.

It takes two arguments:

  • username: string required

Username of the user logging in.

  • password: string required

Password of the user logging in.

You can use it like this:

client/pages/auth.jsx
// Importing the login action 👇
import login from '@wasp/auth/login'

import { useState } from 'react'
import { useHistory } from 'react-router-dom'
import { Link } from 'react-router-dom'

export function LoginPage() {
  const [username, setUsername] = useState('')
  const [password, setPassword] = useState('')
  const [error, setError] = useState(null)
  const history = useHistory()

  async function handleSubmit(event) {
    event.preventDefault()
    try {
      await login(username, password)
      history.push('/')
    } catch (error) {
      setError(error)
    }
  }

  return (
    <form onSubmit={handleSubmit}>
      {/* ... */}
    </form>
  );
}
note

When using the exposed login() function, make sure to implement your redirect on success login logic (e.g. redirecting to home).

signup()​

An action for signing up the user. This action does not log in the user, you still need to call login().

It takes one argument:

  • userFields: object required

    It has the following fields:

    • username: string required

    • password: string required

    info

    Wasp only stores the auth-related fields of the user entity. Adding extra fields to userFields will not have any effect.

    If you need to add extra fields to the user entity, we suggest doing it in a separate step after the user logs in for the first time.

You can use it like this:

client/pages/auth.jsx
// Importing the signup and login actions 👇
import signup from '@wasp/auth/signup'
import login from '@wasp/auth/login'

import { useState } from 'react'
import { useHistory } from 'react-router-dom'
import { Link } from 'react-router-dom'

export function Signup() {
  const [username, setUsername] = useState('')
  const [password, setPassword] = useState('')
  const [error, setError] = useState(null)
  const history = useHistory()

  async function handleSubmit(event) {
    event.preventDefault()
    try {
      await signup({
        username,
        password,
      })
      await login(username, password)
      history.push("/")
    } catch (error) {
      setError(error)
    }
  }

  return (
    <form onSubmit={handleSubmit}>
      {/* ... */}
    </form>
  );
}

2. Creating your custom actions​

The code of your custom sign-up action can look like this:

main.wasp
// ...

action signupUser {
  fn: import { signUp } from "@server/auth/signup.js",
  entities: [User]
}
src/server/auth/signup.js
export const signUp = async (args, context) => {
  // Your custom code before sign-up.
  // ...

  const newUser = context.entities.User.create({
    data: {
      username: args.username,
      password: args.password // password hashed automatically by Wasp! 🐝
    }
  })

  // Your custom code after sign-up.
  // ...
  return newUser
}

Using Auth​

To read more about how to set up the logout button and how to get access to the logged-in user in our client and server code, read the using auth docs.

API Reference​

userEntity fields​

main.wasp
app myApp {
  wasp: {
    version: "^0.11.0"
  },
  title: "My App",
  auth: {
    userEntity: User,
    methods: {
      usernameAndPassword: {},
    },
    onAuthFailedRedirectTo: "/login"
  }
}

// Wasp requires the `userEntity` to have at least the following fields
entity User {=psl
    id                        Int           @id @default(autoincrement())
    username                  String        @unique
    password                  String
psl=}

Username & password auth requires that userEntity specified in auth contains:

  • username field of type String
  • password field of type String

Fields in the usernameAndPassword dict​

main.wasp
app myApp {
  wasp: {
    version: "^0.11.0"
  },
  title: "My App",
  auth: {
    userEntity: User,
    methods: {
      usernameAndPassword: {},
    },
    onAuthFailedRedirectTo: "/login"
  }
}
// ...
info

usernameAndPassword dict doesn't have any options at the moment.

You can read about the rest of the auth options in the using auth section of the docs.