How to init oauth - Rails

oauth.rb

class Oauth
  def client
    consumer = OAuth::Consumer.new(
      consumer_key, consumer_secret, site: BASE_URL)

    token = {
      oauth_token: access_token,
      oauth_token_secret: access_token_secret
    }

    OAuth::AccessToken.from_hash(consumer, token)
  end
end

# client.get(endpoint)

oauth_controller.rb

class OauthController < ApplicationController

  # the connect button in your website
  def connect
    oauth = OAuth::Consumer.new('consumer_key', 'consumer_secret', site: 'http://websiteyourequest.com')
    @request_token = oauth.get_request_token(oauth_callback: 'your_callback_url')

    session[:app_token] = @request_token.token
    session[:app_secret] = @request_token.secret
    redirect_to @request_token.authorize_url
  end

  def oauth
    unless params[:denied].present?
      oauth = OAuth::Consumer.new('consumer_key', 'consumer_secret', site: 'http://websiteyourequest.com')
      request_token = OAuth::RequestToken.new(oauth, session[:app_token], session[:app_secret])
      access_token = request_token.get_access_token(oauth_verifier: params[:oauth_verifier])
      # token are stored in access_token.params
      puts access_token.params
    end
    redirect_to root_path
  end
end