gistfile1.txt

def eager_cache(trigger_action, target_action, conditions = {})
  if target_action.is_a? Array
    target_controller, target_action = *target_action
    conditions[:controller] = target_controller
  end

  after("_eager_cache_#{trigger_action}_after", conditions.only(:if, :unless).merge(:with => [conditions.except(:if, :unless)], :only => trigger_action))
  alias_method "_eager_cache_#{trigger_action}_after", :_eager_cache_after
end