= render Dsfr::ComboboxComponent.new form: @form, name: :external_id, url: data_sources_data_source_commune_path, selected: [@champ.to_s, @champ.selected], id: @champ.input_id, class: 'fr-select', describedby: @champ.describedby_id do
  = @form.hidden_field :code_postal, data: { value_slot: 'data:string' }