Cadenero Logo By Agiltec Logo .

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Authentication Engine for Rails.API multitenant RESTful APIs based on Warden. It: * Is Racked based * Use token authentication as strategy for the API * Is RESTful API * Allows you to have multiple roles (or models/scopes) signed in at the same time


About Cadenero

Why Cadenero?

"Cadenero" is the spanish word for "Bouncer (doorman)". The main function of Cadenero is to be a resource for authenticating consumers of the services that the API provides. As the real bouncers, Cadenero aims to provide security, check authorized access, to refuse entry for intoxication, aggressive behavior or non-compliance with statutory or establishment rules.

You can use Warden or Devise directly but for API apps the rewritting and monkey patching can be messy.

Installing Cadenero



You should have a PostgreSQL server (for downloading see: If you are using OSX, you can install using Homebrew for that you can follow the following this instructions

Ruby 1.9.x or 2.x

For that we recommend that you use rbenv with ruby-build or rvm

We use the standard rake, bundler and gem


You are here. Then you know what to do ;-)


Rails 3.2.13 is the master version used now by Cadenero, if you want to use Rails 4 goodness please use the branch "rails4"

Generate first your Rails app as usual using:


In the Gemfile add the following lines: ```ruby gem 'cadenero', '~> 0.0.2.b10' gem "strong_parameters", "~> 0.2.1"

group :development, :test do
  gem 'rspec-rails', '~> 2.14.0'
  gem 'capybara', '~> 2.1.0'
  gem 'rack-test', '~> 0.6.2'

In the `config/database.yml` replace the `sqlite3` adapter for `postgresql` as follow:

      adapter: postgresql
      encoding: unicode
      database: your_app_development 
      pool: 5
      min_messages: warning

      adapter: postgresql
      encoding: unicode
      database: your_app_test
      pool: 5
      min_messages: warning

Then run bundle, create the databases and run the generator:

    $ bundle install; rake db:create; rails-api g cadenero:install

Finally run the server:

    $ rails-api s

Or much better for checking the multitenancy you can use Pow. To install or upgrade Pow, open a terminal and run this command:

    $ curl | sh (View Source)

To set up a Rack app, just symlink it into ~/.pow:

    $ cd ~/.pow
    $ ln -s /path/to/myapp

Check that you can access the API using the default account www and user with password `changeme╦ť or those defined for you when the generator was run. Ror the client you can use cURL or RESTClient

You can create a new account as follows:

    $ curl -v -X POST -H 'Content-Type: application/json' -d '{"account": { "name": "Testy", "subdomain": "tested1", "owner_attributes": {"email": "", "password": "changeme", "password_confirmation": "changeme"}}}'




        Content-Type: application/json

    {"account": { "name": "Testy", "subdomain": "test2", "owner_attributes": {"email": "", "password": "changeme", "password_confirmation": "changeme"}}}

Have fun!

Access Points

Cadenero creates the following versioned routes for exposing the authentication RESTful API

      v1_root        /v1(.:format)           cadenero/v1/account/dashboard#index {:default=>:json}
  v1_sessions POST   /v1/sessions(.:format)  cadenero/v1/account/sessions#create {:default=>:json}
              DELETE /v1/sessions(.:format)  cadenero/v1/account/sessions#delete {:default=>:json}
     v1_users POST   /v1/users(.:format)     cadenero/v1/account/users#create {:default=>:json}
              GET    /v1/users(.:format)     cadenero/v1/account/users#index {:default=>:json}
      v1_user GET    /v1/users/:id(.:format) cadenero/v1/account/users#show {:default=>:json}
  v1_accounts POST   /v1/accounts(.:format)  cadenero/v1/accounts#create {:default=>:json}
         root        /                       cadenero/v1/account/dashboard#index {:default=>:json}

You can check them running:

    $ rake routes


For authentication Cadenero has two default Warden Strategies: * Password. That expect that the client to keep a session cookie and using for authentication the user email and password. * Token Authentication. That is stateless and expects that for each request the user include the auth_token as a key-value of the request params.

In any case when you signed up Cadenero creates an auth_token for the membership to the account that you signed up.

If you want to know more about Warden Strategies see:


You can review the YARD docs in:

The Cadenero Task List

  • [x] Specs for the code 100% Coverage using BDD with Rspec and Capybara
  • [x] Documentation for all the code
  • [ ] Examples of use and demo


Cadenero aims to adhere to Semantic Versioning 2.0.0 the current version is: 0.0.2-b10 meaning MAJOR.MINOR.PATCH format. Violations of this scheme should be reported as bugs. Specifically, if a minor or patch version is released that breaks backward compatibility, that version should be immediately yanked and/or a new version should be immediately released that restores compatibility. Breaking changes to the public API will only be introduced with new major versions. As a result of this policy, you can (and should) specify a dependency on this gem using the Pessimistic Version Constraint with two digits of precision. For example:

    spec.add_dependency 'cadenero', '~> 1.0'

Bug reports

If you discover a problem with Cadenero, we would like to know about it. However, we ask that you please review these guidelines before submitting a bug report:

To submit the bug or issue go to:

If you found a security bug, do NOT use the GitHub issue tracker. Send an email to the maintainers listed at the bottom of the README please.


We hope that you will consider contributing to Cadenero. You're encouraged to submit pull requests, propose features and discuss issues.

  • Fork the project
  • Write test for your new feature or a test that reproduces a bug
  • Implement your feature or make a bug fix
  • Commit, push and make a pull request. Bonus points for topic branches.

You will usually want to write tests for your changes using BDD tools as RSpec, Rack::Test and Capybara.

To run the test suite, go into Cadenero's top-level directory and run bundle install and rspec spec. For the tests to pass, you will need to have a Postgresql server running on your system.

If you have not contribute before in a Github repo please review first:

Running the Specs

Cadenero use RSpec and Capybara. To run the specs you only need to do:

    $ RAILS_ENV=test bundle exec rake db:create
    $ RAILS_ENV=test bundle exec rake db:migrate
    $ bundle exec rspec spec

You can binstub the command bins to avoid writing bundle exec. You only need to write:

    $ bundle binstubs rspec-core
    $ bundle binstubs rake

About Dependencies and Inspirations


Cadenero is based on Warden, which is a general Rack authentication framework created by Daniel Neighman. We encourage you to read more about Warden here:


Some code and architectural decisions in Cadenero have been inspired for the excellent gem Devise.


Cadenero is a Rails::API Engine, Rails::API is a subset of a normal Rails application, created for applications that don't require all functionality that a complete Rails application provides. It is a bit more lightweight, and consequently a bit faster than a normal Rails application. The main example for its usage is in API applications only, where you usually don't need the entire Rails middleware stack nor template generation. Rails::API was created by Santiago Pastorino. We encourage you to read more about Rails::API here:


Cadenero use Apartment for Database multi-tenancy for Rack. Cadenero creates a new PostgreSQL Schema (like a NameSpace) for each account with subdomain, this means that each account has access only to its own information in that Schema. If you want to persist models that will have information that should be namespaced by the account Schemas rather than use the usual rake db:migrate for creating the tables you should use rake apartment:migrate. Cadenero creates for you the required config.database_names required for Apartment. We encourage you to review the Apartment README to have more details

Multitenancy with Rails And subscriptions too!

Parts of the code of Cadenero have been based on the excellent work of Ryan Bigg in his book "Multitenancy with Rails And subscriptions too!" but modified to be use in a RESTful API



MIT License. Copyright 2013 AgilTec.

You are not granted rights or licenses to the trademarks of the AgilTec, including without limitation the Cadenero name or logo.

This project rocks and uses MIT-LICENSE.