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A Phoenix 1.3 JSON Web Token Authentication API, built with Ueberauth Guardian

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Elixir on Phoenix 1.4 JSON Web Token Authentication API

App by Nick West. Email: [email protected]

Companion repo for JWT Auth with an Elixir on Phoenix 1.4 API and React Native, Part I: Phoenix JWT API

This is a demo Phoenix Elixir JWT REST API app, using Ueberauth's Guardian package for JWT authentication and riverrun's Comeonin/bcrypt_elixir packages for password hashing.

Note: replace the Guardian config secret with your own, as the secrets used in this demo app are public.

To start your Phoenix server:

  • Install dependencies with mix deps.get
  • Create and migrate your database with mix ecto.create && mix ecto.migrate
  • Start Phoenix server with mix phx.server

API Endpoints:

Our API routes are configured in lib/myApi_web/router.ex.

By default, they are:

POST: Sign up a User

POST a JSON "user" to /api/v1/sign_up:

{
  "user": {
    "email": "[email protected]",
    "password": "some_password",
    "password": "some_password"
  }
}

If the client sign up POST request is successful, the server will return a JSON Web Token, as { "jwt": "some JSON web token here"}

POST: Sign in a User

POST a valid email and password JSON to /api/v1/sign_in:

{
  "email": "[email protected]",
  "password": "some_password"
}

If the client POST sign in request is successful, the server will return a JSON Web Token, as { "jwt": "some JSON web token here"}.

GET: User Data

The subject of our JWT is its correlating user's user_id.

With the request header "Authorization": "Bearer " + jwt, a client can retrieve user data via a GET request to /api/v1/my_user.

Learn more about Phoenix

Many thanks!

If you enjoyed this tutorial, consider buying me a coffee :)

My Bitcoin address: 1EoaCpygbLgmeNaKWuba1PMM1Nu9WzRpXm

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