ruby on rails - redirecting logged in users to index if they try to access /login -

so i'm after simple solution can't seem work out. new rails, trying learn , basics down.

when users aren't logged in , try , access various pages, redirected /login. want stop them form being able view /signin page if logged in.

how can achieve this?

update

application_controller

def current_user   @current_user ||= user.find_by_auth_token!(cookies[:auth_token]) if cookies[:auth_token] end 

sessions_controller

class sessionscontroller < applicationcontroller  layout "empty"  def create  user = user.find_by_user_name(params[:user_name])  if user && user.authenticate(params[:password])   if params[:remember_me]       cookies.permanent[:auth_token] = user.auth_token     else       cookies[:auth_token] = user.auth_token     end   flash[:success] = "you logged in"   redirect_to '/' else     flash[:error] = "invalid username or password"   redirect_to '/login'  end end  def destroy  cookies.delete(:auth_token)  flash[:error] = "you have logged out"  redirect_to '/login' end  private  end 

add before_action action /login view, if have current_user can this

before_action :check_session, only: [:login]  def login   # login page action end  private  def check_session   redirect_to root_path unless current_user.blank? end 

hope helps!