Fix mail notification if author changed

CHANGELOG.rst

@@ -1,6 +1,12 @@
 Changelog
 =========
 
+2.0.21
+++++++
+
+- fix mail notification if issue author changed
+
+
 2.0.20
 ++++++
 

init.rb

@@ -4,7 +4,7 @@ Redmine::Plugin.register :additionals do
   name 'Additionals'
   author 'AlphaNodes GmbH'
   description 'Customizing Redmine, providing wiki macros and act as a library/function provider for other Redmine plugins'
-  version '2.0.20'
+  version '2.0.21-master'
   author_url 'https://alphanodes.com/'
   url 'https://github.com/alphanodes/additionals'
 

lib/additionals/hooks.rb

@@ -23,11 +23,11 @@ module Additionals
     render_on(:view_users_show_contextual, partial: 'users/additionals_contextual')
 
     def helper_issues_show_detail_after_setting(context = {})
-      d = context[:detail]
-      return unless d.prop_key == 'author_id'
+      detail = context[:detail]
+      return unless detail.prop_key == 'author_id'
 
-      d[:value] = find_name_by_reflection('author', d.value)
-      d[:old_value] = find_name_by_reflection('author', d.old_value)
+      detail[:value] = find_name_by_reflection('author', detail.value) || detail.value
+      detail[:old_value] = find_name_by_reflection('author', detail.old_value) || detail.old_value
     end
   end
 end