bborn/communityengine

class CategorySweeper < ActionController::Caching::Sweeper
  observe Category # This sweeper is going to keep an eye on the Category model

  # If our sweeper detects that a Category was created call this
  def after_create(category)
    expire_cache_for(category)
  end

  # If our sweeper detects that a Category was updated call this
  def after_update(category)
    expire_cache_for(category)
  end

  # If our sweeper detects that a Category was deleted call this
  def after_destroy(category)
    expire_cache_for(category)
  end

  private
  def expire_cache_for(record)
    # Expire the home page
    expire_action(:controller => 'base', :action => 'site_index')

    # Also expire the sitemap
    expire_action(:controller => 'sitemap', :action => 'index')
  end
end