wip display item even if not in db

app/models/champs/drop_down_list_champ.rb

@@ -80,6 +80,10 @@ def referentiel_item_option_value
     referentiel_item_option.values.first
   end
 
+  def value_is_in_referentiel_ids?
+    referentiel_drop_down_options.map { _1['id'] }.include?(value.to_i)
+  end
+
   private
 
   def value_is_in_options
@@ -88,8 +92,4 @@ def value_is_in_options
 
     errors.add(:value, :not_in_options)
   end
-
-  def value_is_in_referentiel_ids?
-    referentiel_drop_down_options.map { _1['id'] }.include?(value.to_i)
-  end
 end

app/models/types_de_champ/drop_down_list_type_de_champ.rb

@@ -8,11 +8,9 @@ def champ_blank?(champ)
   private
 
   def champ_value_in_options?(champ)
-    if champ.referentiel?
-      champ_with_other_value?(champ) || referentiel_drop_down_options.map { _1['id'] }.include?(champ.value.to_i)
-    else
-      champ_with_other_value?(champ) || drop_down_options.include?(champ.value)
-    end
+    # we want to display referentiel item even if it is not in db anymore
+    return true if champ.referentiel?
+    champ_with_other_value?(champ) || drop_down_options.include?(champ.value)
   end
 
   def champ_with_other_value?(champ)

app/views/shared/champs/drop_down_list/_show.html.haml

@@ -1,6 +1,9 @@
 - if champ.referentiel? && champ.referentiel_item_option.present?
-  - if  current_user.instructeur? && !current_user.owns_or_invite?(champ.dossier)
+  - if current_user.instructeur? && !current_user.owns_or_invite?(champ.dossier)
     .fr-background-alt--grey.fr-p-3v
+      - if !champ.value_is_in_referentiel_ids?
+
+        %span.fr-badge.fr-badge--warning.fr-badge--sm.pull-right Valeur retirée du référentiel
       - champ.referentiel_item_option.merge(champ.referentiel_item_data).each do |key, value|
         - if key.present?
           = render Dossiers::RowShowComponent.new(label: key) do |c|