RubyMagicLink

RubyMagicLink: A gem crafted for the secure generation of tokens, ensuring the safe transmission of data within your Ruby application. Useful for creating magic links—single-use URLs empowering users to perform actions without a password.

Add this line to your application's Gemfile:

gem 'ruby_magic_link'

And then execute:

bundle install

Or install it manually using:

gem install ruby_magic_link

For Rails applications, create an initializer file in the config/initializers directory.

# config/initializers/ruby_magic_link.rb

RubyMagicLink.setup do |config|
  config.secret_key = 'your_secret_key'
end

Replace your_secret_key with a strong secret key. Keep this key confidential and do not expose it in your public repositories.

To generate a secret key, run the following rake task:

bundle exec rake ruby_magic_link:generate_key

Encode your data:

payload = {
  user_id: 123_456,
  action: :authenticate
}
encrypted_data = RubyMagicLink::Token.create(payload, expires_in: Time.now.to_i + 3600)
url = "https://example.com/magic_links?data=#{encrypted_data}"

# Send the generated URL in an email or through other communication channels.

Decode your data:

class MagicLinksController < ApplicationController
  def index
    token = RubyMagicLink::Token.decode(params[:data])
    if token.valid? && token.payload['action'] == 'authenticate'
      sign_in(:user, token.payload['user_id'])
      redirect_to home_path
    end
  end
end

Copyright (c) 2024 Igor Korepanov

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.