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thaleshcv/omniauth_callbacks_controller.rb

Last active May 31, 2017 11:33
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omniauth_callbacks_controller.rb
class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
Devise.omniauth_configs.keys.each do |provider|
define_method(provider.to_s) { omniauth_callback(provider) }
end
def failure
redirect_to root_path
end
private
def omniauth_callback(provider)
auth_data = request.env["omniauth.auth"]
user = SigninWithOmniauth.new(auth_data).execute
if user.present? && user.persisted?
sign_in_and_redirect user, event: :authentication
set_flash_message(:notice, :success, kind: provider.to_s.capitalize) if is_navigational_format?
else
session["devise.oauth_data"] = auth_data.except(:extra)
redirect_to new_user_session_path
end
end
end
Raw
signin_with_omniauth.rb
class SigninWithOmniauth
def initialize(auth_data)
@auth_data = auth_data
end
def execute
authentication = Authentication.from_omniauth(auth_data)
raise(AuthError, I18n.t(:failed, scope: [:messages, :auth])) unless authentication.persisted?
if authentication.user.nil?
attach_authentication_to_user(authentication, existing_user || new_user)
end
authentication.user
end
private
def existing_user
User.find_by_email(auth_data.info.email)
end
def new_user
User.create(name: auth_data.info.name, email: auth_data.info.email) do |user|
user.password = Devise.friendly_token[0,20]
user.skip_confirmation!
end
end
def attach_authentication_to_user(authentication, user)
authentication.update_column(:user_id, user)
end
attr_reader :auth_data
end
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