add remove keys from gitlab-shell by id

app/models/key.rb

@@ -81,7 +81,7 @@ class Key < ActiveRecord::Base
     Key.where(identifier: identifier).count == 0
   end
 
-  def owner_name
-    user.username
+  def shell_id
+    "key-#{self.id}"
   end
 end

app/observers/key_observer.rb

@@ -4,7 +4,7 @@ class KeyObserver < ActiveRecord::Observer
   def after_save(key)
     GitoliteWorker.perform_async(
       :add_key,
-      key.owner_name,
+      key.shell_id,
       key.key
     )
   end
@@ -12,7 +12,7 @@ class KeyObserver < ActiveRecord::Observer
   def after_destroy(key)
     GitoliteWorker.perform_async(
       :remove_key,
-      key.owner_name,
+      key.shell_id,
       key.key,
     )
   end