@offer = AbstractOffer.find(
  :first,
  :include => [
    {:offer => :categories},
    {:marketer_offers => [:marketer, {:marketer_site_offers => :marketer_site}]}
  ],
  :conditions => ['marketer_sites.id = ? AND (abstract_offers.enabled OR marketer_accounts.show_disabled_offers) AND marketer_offers.url = ?', @site.id, params[:url]]
)