Issues with SAML Integration

gistfile1.rb

# routes.rb
ActionController::Routing::Routes.draw do |map|

  map.connect 'saml', :controller => 'saml', :action => 'init'
  map.connect '/saml/:action', :controller => 'saml'
...

# Gemfile
gem 'ruby-saml'

...


# /app/controllers/saml_controller.ruby
require 'onelogin/ruby-saml'

class SamlController < ApplicationController
  def init
    request = OneLogin::RubySaml::Authrequest.new
    redirect_to(request.create(saml_settings))
  end

  def consume
    response          = OneLogin::RubySaml::Response.new(params[:SAMLResponse])
    response.settings = saml_settings

    if response.is_valid? && user = current_account.users.find_by_email(response.name_id)
      authorize_success(user)
    else
      authorize_failure(user)
    end
  end

  private

  def saml_settings
    settings = OneLogin::RubySaml::Settings.new

    settings.assertion_consumer_service_url = "http://#{request.host}/saml/consume"
    settings.issuer                         = request.host
    settings.idp_sso_target_url             = "https://app.onelogin.com/saml/signon/#{OneLoginAppId}"
    settings.idp_cert_fingerprint           = OneLoginAppCertFingerPrint
    settings.name_identifier_format         = "urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress"
    # Optional for most SAML IdPs
    settings.authn_context = "urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport"
    # Optional. Describe according to IdP specification (if supported) which attributes the SP desires to receive in SAMLResponse.
    settings.attributes_index = 30

    settings
  end
end