module ActionView::Helpers::CacheHelper::CachingRegistry

def caching?
  ActiveSupport::IsolatedExecutionState[:action_view_caching] ||= false
end

def track_caching
  caching_was = ActiveSupport::IsolatedExecutionState[:action_view_caching]
  ActiveSupport::IsolatedExecutionState[:action_view_caching] = true
  yield
ensure
  ActiveSupport::IsolatedExecutionState[:action_view_caching] = caching_was
end