Track dossier private annotations modifications

app/controllers/gestionnaires/dossiers_controller.rb

@@ -136,8 +136,8 @@ module Gestionnaires
 
     def update_annotations
       dossier = current_gestionnaire.dossiers.includes(champs_private: :type_de_champ).find(params[:dossier_id])
-      # FIXME: add attachements validation, cf. Champ#piece_justificative_file_errors
       dossier.update(champs_private_params)
+      dossier.modifier_annotations!(current_gestionnaire)
       redirect_to annotations_privees_gestionnaire_dossier_path(procedure, dossier)
     end
 

app/models/dossier.rb

@@ -366,6 +366,11 @@ class Dossier < ApplicationRecord
       end
   end
 
+  def modifier_annotations!(gestionnaire)
+    champs_private.select(&:value_previously_changed?).each do |champ|
+      log_dossier_operation(gestionnaire, :modifier_annotation, champ)
+    end
+  end
   private
 
   def log_dossier_operation(author, operation, subject = nil)

app/models/dossier_operation_log.rb

@@ -5,7 +5,8 @@ class DossierOperationLog < ApplicationRecord
     accepter: 'accepter',
     refuser: 'refuser',
     classer_sans_suite: 'classer_sans_suite',
-    supprimer: 'supprimer'
+    supprimer: 'supprimer',
+    modifier_annotation: 'modifier_annotation',
   }
 
   belongs_to :dossier
@@ -59,6 +60,8 @@ class DossierOperationLog < ApplicationRecord
       case subject
       when Dossier
         DossierSerializer.new(subject).as_json
+      when Champ
+        ChampSerializer.new(subject).as_json
       end
     end
   end