class Decidim::Meetings::Directory::MeetingSearch

def fetch_category_ids

return a param list like [47, 48, 43, 44, 45, 46, 41, 42, 27, 28, 32, 31, 29, 30, 26, 25]
take a param list like ["2", "10", "Decidim__Assembly4", "Decidim__Assembly2"] 
def fetch_category_ids
  cat_ids = category_ids.without("without")
  additional_ids = cat_ids.select { |a| a =~ /Decidim__/ }
  additional_ids = parse_category_ids(additional_ids)
  cat_ids.collect(&:to_i).without(0).push(*additional_ids)
end