アイヌ語追加 (#428) (#433)

Reviewed-on: #433
Co-authored-by: miteruzo <miteruzo@naver.com>

backend/app/models/locale.rb

@@ -1,26 +1,38 @@
 class Locale < ApplicationRecord
-  after_create_commit :generate_tag_names!
+  attr_accessor :certified_tag_names_path
+
+  around_save :save_with_tag_names!, if: :will_generate_tag_names?
 
   belongs_to :language, foreign_key: :language_code, primary_key: :code
   belongs_to :script, foreign_key: :script_code, primary_key: :code
 
-  enum :code, ja: 'ja', en: 'en', fr: 'fr'
+  # Enum deserialisation uses the first key for each stored value.
+  # Keep the legacy key for existing predicates, scopes and query arguments.
+  enum :code, { ja: 'ja', 'ain-Kana' => 'ain-Kana', ain_kana: 'ain-Kana' }
+
+  def code= value
+    super(self.class.codes.fetch(value.to_s, value))
+  end
 
   def self.nipponese = Locale.find('ja')
 
   private
 
-  def generate_tag_names!
-    ApplicationRecord.transaction do
-      tag_ids = TagName.where(language_code:, primary_flg: true).pluck(:tag_id)
-      Tag.where.not(id: tag_ids).includes(:tag_names).find_each do
-        TagName.create!(tag_id: _1.id,
-                        language_code:,
-                        name: TagName.generate_name(self, _1, _1.tag_name('ja')),
-                        script_code:,
-                        primary_flg: true,
-                        auto_generated: true)
-      end
+  def will_generate_tag_names?
+    deprecated_at.nil? && (will_save_change_to_code? || will_save_change_to_deprecated_at?)
+  end
+
+  def save_with_tag_names!
+    completed = self.class.transaction(requires_new: true) do
+      SharedResourceIdAllocator.lock_space!(Tag, 'tags')
+      saved = yield
+      raise ActiveRecord::RecordNotSaved, 'Locale save was halted' unless saved
+
+      TagNameCompletion.for_locale!(self)
+      true
+    end
+    unless completed
+      raise ActiveRecord::RecordNotSaved, 'Locale tag completion was rolled back'
     end
   end
 end