application_controller.rb

class ApplicationController < ActionController::Base
  before_filter :authenticate_user!
  protect_from_forgery with: :exception
  before_filter :configure_permitted_parameters, if: :devise_controller?

  def after_sign_out_path_for(resource_or_scope)
    new_user_session_path
  end

#esto lo tengo porque tengo 2 tipos de user que quiero redirigir cuando inicien la sección.
#si no usas esto entonces rails usara el que hice en el route.
def after_sign_in_path_for(user)
  if user.role == "super_admin"
    panel_path
  else user.role == "admin"
    company_path(current_user.company)
  end
end


end

routes.rb

HBM::Application.routes.draw do
  
  devise_scope :user do
    root to: 'devise/sessions#new' , :as => "login" 
  end
  
  authenticated do
    root 'dashboard#index', :as => "panel"
  end

end