Backport Note#commands_changes from EE

app/controllers/projects/notes_controller.rb

@@ -197,6 +197,7 @@ class Projects::NotesController < Projects::ApplicationController
       )
     end
+    attrs[:commands_changes] = note.commands_changes unless attrs[:award]
     attrs
   end

app/models/note.rb

@@ -19,6 +19,9 @@ class Note < ActiveRecord::Base
   # Banzai::ObjectRenderer
   attr_accessor :user_visible_reference_count
+  # Attribute used to store the attributes that have ben changed by slash commands.
+  attr_accessor :commands_changes
+
   default_value_for :system, false
   attr_mentionable :note, pipeline: :note

app/services/notes/create_service.rb

@@ -43,6 +43,8 @@ module Notes
         if only_commands
           note.errors.add(:commands_only, 'Your commands have been executed!')
         end
+
+        note.commands_changes = command_params.keys
       end
       note