gistfile1.txt

class DocSweeper < ActionController::Caching::Sweeper
  
  observe Doc
  
  def after_save(doc)
    expire_page_for(doc)
  end

  def after_destroy(doc)
    expire_page_for(doc)
  end         
         
  private
  
  def expire_page_for(record)
    expire_page(page_path(record.category.link, record.permalink))
    
    #Expire home page
    expire_page(root_path)
    
    #Expire related pages too
    expire_page :controller => 'categories', :action => 'show', :id => record.category.link   
    Doc.in_category(record.category_id).each do |page|
      expire_page(page_path(page.category.link, page.permalink))
    end
  end
  
  
end