Devise & Omniauth Multiple Providers
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README.md

DOMP: Devise & Omniauth Multiple Providers

Generator for using Devise & Omniauth with Multiple Providers. I wrote this because I got tired of repeating the same code in every app that required multiple providers.

Basically, to have multiple providers working in a brand new application, all you need to do is run the following:

gem "devise"
rails generate devise:install
rails generate devise User
rails generate domp User facebook twitter

You can list as many providers as you want, check out a full list of them.

Note: this is not an engine but rather a generator which will generate models, controllers and setup configs for you. You are free to change everything. You are the king.

Installation

$ gem install domp

Usage

First, you need to have devise already installed and your model generated:

rails generate devise:install
rails generate devise User

Run the domp generator:

rails generate domp User facebook twitter

During the generation you will be promted for the provider's application id and secret key.

What is generated for you:

AuthenticationProvider

Model & migration. Will be populated with the providers you specify.

UserAuthentication

Model & migration.

User model additions

Here's what the User model will look like:

class User < ActiveRecord::Base
  has_many :authentications, class_name: 'UserAuthentication'

  devise :omniauthable, :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable

  def self.create_from_omniauth(params)
    attributes = {
      email: params['info']['email'],
      password: Devise.friendly_token
    }

    create attributes
  end
end

User::OmniauthCallbacksController

Here goes all the logic of creating multiple authentications. You are free to change everything, it's just a boilerplate that will make sense in most of the apps.

Route additions

devise_for :users, controllers: { omniauth_callbacks: 'users/omniauth_callbacks' }

Devise config additions

The following will be added to config/initializers/devise.rb:

config.omniauth :facebook, 'x', 'x'
config.omniauth :twitter, 'x', 'x'

Gemfile additions

gem "omniauth"
gem "omniauth-facebook"
gem "omniauth-twitter"

License

This gem is released under the MIT License.

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request