Add commands_executed flag to Note objects.

This flag will be used to properly update the sidebar after the slash
commands have been processed.

app/controllers/projects/notes_controller.rb

@@ -162,7 +162,8 @@ class Projects::NotesController < Projects::ApplicationController
         discussion_id: note.discussion_id,
         html: note_html(note),
         award: false,
-        note: note.note
+        note: note.note,
+        commands_executed: note.commands_executed
       }
 
       if note.diff_note?
@@ -194,6 +195,7 @@ class Projects::NotesController < Projects::ApplicationController
       {
         valid: false,
         award: false,
+        commands_executed: note.commands_executed,
         errors: note.errors
       }
     end

app/models/note.rb

@@ -19,6 +19,9 @@ class Note < ActiveRecord::Base
   # Banzai::ObjectRenderer
   attr_accessor :user_visible_reference_count
 
+  # Flag used to indicate that a Note contains slash commands and they have been executed.
+  attr_accessor :commands_executed
+
   default_value_for :system, false
 
   attr_mentionable :note, pipeline: :note

app/services/notes/create_service.rb

@@ -32,7 +32,7 @@ module Notes
         todo_service.new_note(note, current_user)
       end
 
-      if command_params && command_params.any?
+      if command_params.present?
         slash_commands_service.execute(command_params, note)
 
         # We must add the error after we call #save because errors are reset
@@ -40,6 +40,8 @@ module Notes
         if only_commands
           note.errors.add(:commands_only, 'Your commands have been executed!')
         end
+
+        note.commands_executed = true
       end
 
       note