app/helpers/application_helper.rb
module ApplicationHelper
def signed_in?
session[:user_id] ? true : false
end
def current_user
return nil unless session[:user_id]
User.find(session[:user_id]) rescue nil
end
def active_nav(name)
@active_nav ||= :home
@active_nav == name ? 'active red inverted' : ''
end
end