handle aria_describedby on react combobox

app/components/dsfr/input_errorable.rb

@@ -79,12 +79,19 @@ module Dsfr
                                              'fr-input': !react,
                                              'fr-mb-0': true
                                       }.merge(input_error_class_names)))
-        if errors_on_attribute?
-          @opts.deep_merge!('aria-describedby': describedby_id)
+
+        aria_describedby = []
+
+        if object.respond_to?(:description) && object.description.present?
+          aria_describedby << describedby_id
         elsif hintable?
-          @opts.deep_merge!('aria-describedby': hint_id)
+          aria_describedby << hint_id
         end
 
+        aria_describedby << object.error_id if errors_on_attribute? && object.respond_to?(:error_id)
+
+        @opts.deep_merge!('aria-describedby': aria_describedby.join(' ')) if aria_describedby.present?
+
         if @required
           @opts[react ? :is_required : :required] = true
         end

app/components/editable_champ/drop_down_list_component.rb

@@ -27,13 +27,13 @@ class EditableChamp::DropDownListComponent < EditableChamp::EditableChampBaseCom
   end
 
   def react_props
-    react_input_opts(id: @champ.input_id,
+    react_input_opts(
+      id: @champ.input_id,
       class: 'fr-mt-1w',
       name: @form.field_name(:value),
       selected_key: @champ.selected,
       items: @champ.drop_down_options_with_other.map { _1.is_a?(Array) ? _1 : [_1, _1] },
-      empty_filter_key: @champ.drop_down_other? ? Champs::DropDownListChamp::OTHER : nil,
-      'aria-describedby': @champ.describedby_id,
-      'aria-labelledby': @champ.labelledby_id)
+      empty_filter_key: @champ.drop_down_other? ? Champs::DropDownListChamp::OTHER : nil
+    )
   end
 end

app/components/editable_champ/multiple_drop_down_list_component.rb

@@ -12,14 +12,13 @@ class EditableChamp::MultipleDropDownListComponent < EditableChamp::EditableCham
   end
 
   def react_props
-    react_input_opts(id: @champ.input_id,
+    react_input_opts(
+      id: @champ.input_id,
       class: 'fr-mt-1w',
       name: @form.field_name(:value, multiple: true),
       selected_keys: @champ.selected_options,
       items: @champ.drop_down_options,
-      value_separator: false,
-      'aria-label': @champ.libelle,
-      'aria-describedby': @champ.describedby_id,
-      'aria-labelledby': @champ.labelledby_id)
+      value_separator: false
+    )
   end
 end