search for: user_record

My application needs to know if a user is an administrator, for security and aesthetic reasons. At the moment, I store true/false in the session by doing the following at login: session[:user_is_admin] = authenticated_user.is_admin? Is this OK to do? Or should I really be doing the following every time: User.find(session[:user_id]).is_admin? (user_id is always in the session too) Is there