def obtain_ancestor(check = nil, orderby = 'post_title DESC')
      post = obtain_record(check)
      return nil if post.blank?
      p = post.ancestors
      p = p.arrange(:order => orderby.to_sym) if !orderby.blank?
      filter_results(p)
    end
def obtain_ancestor(check = nil, orderby = 'post_title DESC')
      post = obtain_record(check)
      return nil if post.blank?
      p = post.ancestors
      p = p.arrange(:order => orderby.to_sym) if !orderby.blank?
      filter_results(p)
    end
returns the ancestors for the given post
 Params:
 +check+:: ID, post_slug, or post_title - if this is nil it will use the @content variable (the current page)