ApiAuthenticationGem

A lightweight and easy-to-use Ruby gem that adds user signup and login functionality to your Rails API using JWT authentication.

No need to write boilerplate authentication code again — just plug it in, and you're good to go!

---

✨ Features

• ✅ User signup with email uniqueness and password validation (handled by the gem)
• ✅ Login with JWT token generation
• ✅ Easy integration with any Rails API
• ✅ Customizable user model support

---

📦 Installation

Add this line to your Rails application's Gemfile: gem 'api_authentication_gem' Then run: bundle install

🛠 Setup in Your Rails API

1. Generate the User Model (if not already created) rails generate model User email:string password_digest:string rails db:migrate

2. Create a Controller to Handle Auth Actions

class UsersController < ApplicationController def signup result = ApiAuthenticationGem::Auth.signup( email: params[:email], password: params[:password], user_class: User )

if result[:error]
  render json: { error: result[:error] }, status: :unprocessable_entity
else
  render json: { message: result[:message], user: result[:user] }, status: :created
end

end

def login result = ApiAuthenticationGem::Auth.login( email: params[:email], password: params[:password], user_class: User )

if result[:error]
  render json: { error: result[:error] }, status: :unauthorized
else
  render json: { token: result[:token] }, status: :ok
end

end end

1. Define Routes In your config/routes.rb file: Rails.application.routes.draw do post 'signup', to: 'users#signup' post 'login', to: 'users#login' end