Setting session timeout in Rails 3

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I think you will have to do this manually since the active record store does not implement the expire_after option. So within your (I assume) before filter, you should do this:

def authenticate
  if session[:logged_in]
    reset_session if session[:last_seen] < 2.minutes.ago
    session[:last_seen] = Time.now
  else
    ... authenticate
    session[:last_seen] = Time.now
  end
end

Obviously, this is not complete, but it should give you the basic idea.

UPDATE:

It seems that the functionality IS present in rails since version 2.3. I found the relevant code here. This is AbstractStore which should serve as base class for all derived ones. So, as dadooda suggests, the following should work:

Some::Application.config.session_store :active_record_store, {
  expire_after: 24.hours,
}

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