:ruby
  selected = params[:region].to_i == filter_region.id
  regions = Region.where(region: filter_region)

%li{ class: selected ? 'selected' : '' }
  - if filter_region.url.present?
    = link_to filter_region.url do
      = flag_icon filter_region.code.try :downcase
      = filter_region.name
      %small
        %em.fa.fa-external-link
  - else
    = link_to region: filter_region.id,
      start_date: params[:start_date],
      year: params[:year],
      tag: params[:tag] do
      - if filter_region.region.nil?
        = flag_icon filter_region.code.try :downcase
      - else
        %em.fa.fa-shield
      = filter_region.name
      - if regions.present?
        %small
          %em.fa.fa-chevron-down
  %ul
    = render partial: '/regions/filter_region',
      collection: regions