require_dependency 'cache_sweeping_helper' class RevisionSweeper < ActionController::Caching::Sweeper include CacheSweepingHelper observe Revision, Page def before_save(record) if record.is_a?(Revision) expire_cached_revisions(record.page) end end def after_save(record) if record.is_a?(Revision) expire_caches(record.page) end end def after_delete(record) if record.is_a?(Page) expire_caches(record) end end private def expire_caches(page) expire_cached_summary_pages(page.web) pages_to_expire = ([page.name] + WikiReference.pages_that_reference(page.web, page.name) + WikiReference.pages_redirected_to(page.web, page.name) + WikiReference.pages_that_include(page.web, page.name)).uniq pages_to_expire.each { |page_name| expire_cached_page(page.web, page_name) } end end