module ResourcesHelper # Return a SELECT tag to choose a section in a given taxonomy def section_select(taxonomy, selected = nil) grouped_options = [] taxonomy.categories.each do |c| grouped_options << [c.name, c.sections.map { |s| [s.name, s.id] }] end select_tag('classification[section_ids]', grouped_options_for_select(grouped_options), selected: selected, multiple: true) end end