Noosfero/noosfero

class ArticleSweeper < ActiveRecord::Observer
  include SweeperHelper
  observe :article

  def after_save(article)
    expire_caches(article)
  end

  def after_destroy(article)
    expire_caches(article)
  end

  def before_update(article)
    if article.parent_id_change
      Article.find(article.parent_id_was).touch if article.parent_id_was
    end
  end

  protected

    def expire_caches(article)
      expire_blocks_cache(article.profile, [:article])

      return if !article.environment

      article.hierarchy(true).each { |a| a.touch if a != article }
      env = article.profile.environment
      if env && (env.portal_community == article.profile)
        article.environment.locales.keys.each do |locale|
          expire_fragment(env.portal_news_cache_key(locale))
        end
      end
    end
end