Add system hooks for project/group membership updates

When updating group and project members, new system hooks
`user_update_for_group` and `user_update_for_team` will be executed.

Fixes https://gitlab.com/gitlab-org/gitlab-ee/issues/12252

2 files changed, 3 insertions, 1 deletions

diff --git a/app/models/member.rb b/app/models/member.rb
index dbae1076670..6457fe9ef0c 100644
--- a/app/models/member.rb
+++ b/app/models/member.rb
@@ -399,7 +399,7 @@ class Member < ApplicationRecord
   end
 
   def post_update_hook
-    # override in sub class
+    system_hook_service.execute_hooks_for(self, :update)
   end
 
   def post_destroy_hook
diff --git a/app/services/system_hooks_service.rb b/app/services/system_hooks_service.rb
index 858e04f43b2..34260d12a62 100644
--- a/app/services/system_hooks_service.rb
+++ b/app/services/system_hooks_service.rb
@@ -74,9 +74,11 @@ class SystemHooksService
     when ProjectMember
       return "user_add_to_team"      if event == :create
       return "user_remove_from_team" if event == :destroy
+      return "user_update_for_team"  if event == :update
     when GroupMember
       return 'user_add_to_group'      if event == :create
       return 'user_remove_from_group' if event == :destroy
+      return 'user_update_for_group'  if event == :update
     else
       "#{model.class.name.downcase}_#{event}"
     end