#309

backend/app/models/nico_tag_version.rb

@@ -0,0 +1,7 @@
+class NicoTagVersion < ApplicationRecord
+  include VersionRecord
+
+  belongs_to :tag
+
+  validates :name, presence: true
+end

backend/app/models/tag.rb

@@ -157,7 +157,6 @@ class Tag < ApplicationRecord
     target_tag => Tag
 
     affected_post_ids = Set.new
-    affected_tag_ids = Set.new
 
     Tag.transaction do
       Array(source_tags).compact.uniq.each do |source_tag|
@@ -181,7 +180,7 @@ class Tag < ApplicationRecord
         end
 
         source_tag.discard!
-        record_tag_discard!(source_tag, current_by_user: nil)
+        TagVersioning.record!(source_tag, event_type: :discard, created_by_user:)
 
         if source_tag.nico?
           source_tag_name.discard!
@@ -190,7 +189,7 @@ class Tag < ApplicationRecord
                                          updated_at: Time.current)
         end
 
-        record_tag_version!(target_tag, event_type: :update, created_by_user: nil)
+        TagVersioning.record!(target_tag, event_type: :update, created_by_user:)
       end
 
       Post.where(id: affected_post_ids.to_a).find_each do |post|

backend/app/models/tag_name.rb

@@ -1,8 +1,6 @@
 class TagName < ApplicationRecord
   include MyDiscard
 
-  default_scope -> { kept }
-
   has_one :tag
   has_one :wiki_page
 

backend/app/models/tag_version.rb

@@ -8,8 +8,7 @@ class TagVersion < ApplicationRecord
                     character: 'character',
                     general: 'general',
                     material: 'material',
-                    meta: 'meta',
-                    nico: 'nico' }, validate: true
+                    meta: 'meta' }, validate: true
 
   validates :name, presence: true
   validates :category, presence: true