#55

backend/app/models/language.rb

@@ -1,5 +1,5 @@
 class Language < ApplicationRecord
   has_many :locales, foreign_key: :language_code, primary_key: :code
 
-  enum :code, ja: 'ja', en: 'en', fr: 'fr'
+  enum :code, ja: 'ja'
 end

backend/app/models/region.rb

@@ -0,0 +1,3 @@
+class Region < ApplicationRecord
+  ;
+end

backend/app/models/script.rb

@@ -1,5 +1,5 @@
 class Script < ApplicationRecord
-  has_many :locales, foreign_key: :language_code, primary_key: :code
+  has_many :locales, foreign_key: :script_code, primary_key: :code
 
-  enum :code, Jpan: 'Jpan', Latn: 'Latn'
+  enum :code, Jpan: 'Jpan'
 end

backend/app/models/tag.rb

@@ -250,20 +250,22 @@ class Tag < ApplicationRecord
       language_code = locale.language_code
       name = name.to_s.strip
 
-      tn = TagName.find_or_create_by!(language_code:, name:) do
-        _1.script_code = locale.script_code
-        _1.primary_flg = true
+      ApplicationRecord.transaction do
+        tn = TagName.find_or_create_by!(language_code:, name:) do
+          _1.script_code = locale.script_code
+          _1.primary_flg = true
+        end
+
+        tag = tn.tag
+        next tag if tag
+
+        tag = Tag.create!(tag_name_id: tn.id, category:)
+        tn.update!(tag:, primary_flg: true, canonical_id: nil, auto_generated: false)
+        generate_tag_names!(locale, tag, tn)
+        tag.association(:tag_names).reset
+
+        tag
       end
-
-      tag = tn.tag
-      return tag if tag
-
-      tag = Tag.create!(tag_name_id: tn.id, category:)
-      tn.update!(tag:)
-      generate_tag_names!(locale, tag, tn)
-      tag.association(:tag_names).reset
-
-      tag
     rescue ActiveRecord::RecordNotUnique
       retry
     end

backend/app/models/tag_name.rb

@@ -11,6 +11,7 @@ class TagName < ApplicationRecord
   validate :alias_must_not_have_wiki_page
   validate :name_must_be_sanitised
   validate :name_mustnt_start_with_nico
+  validate :generated_name_must_be_reserved
 
   def primary? = primary_flg
 
@@ -22,7 +23,7 @@ class TagName < ApplicationRecord
 
     names.map { |name|
       tag_name = tns[name]
-      if !tag_name || tag_name.primary?
+      if !tag_name || tag_name.primary? || tag_name.tag_id.nil?
         name
       else
         TagName.find_by(language_code: locale.language_code,
@@ -40,6 +41,12 @@ class TagName < ApplicationRecord
 
   private
 
+  def generated_name_must_be_reserved
+    if !auto_generated && name.to_s.start_with?('Tag_#')
+      errors.add :name, 'タグの命名規則に反してゐます．'
+    end
+  end
+
   def alias_name_must_not_have_prefix
     if !(primary?) && name.to_s.include?(':')
       errors.add :name, 'エーリアス名にプレフィクスを含むことはできません．'