jwt-rest

Installation

Add this line to your application's Gemfile:

gem 'jwt-rest'

And then execute:

$ bundle

Usage

First you will need to provide a way to find if the ApiKey is valid or not, and a way to retrieve the RSA private key to sign JWT tokens. For this, lets create a initializer config/initializers/jwt_rest.rb.

require "jwt_rest"

module JwtRest
  module Secrets
    def self.rsa_private_key
      # return he Base64 encoded of your RSA private key
    end

    def self.valid_api_key?(api_key)
      # return true if the api_key is valid
    end
  end
end

Then in your API's base controller do this

class ApiController < ActionController::API
  include JwtRest::Authenticable

  before_action :demand_api_key

  def handle_user_identity(jwt_payload)
    return false unless @current_user = User.find_by(email: jwt_payload.dig("email"))
    true
  end
end

This will ensure that every call to your API i s made with a valid api key. You could use the method demand_current_user for those endpoins where you need to authenticate the user with the JWT token.

class UsersController < ApiController
  before_action :demand_current_user, only: [:profile]

  def profile
    # here we have the @current_user variable
  end
end

Contributing

Contribution directions go here.

TODO

• Multiple RSA algorithm types for the JWT token

License

The gem is available as open source under the terms of the MIT License.