#422

backend/app/services/tag_description_operation.rb

@@ -20,11 +20,9 @@ class TagDescriptionOperation
                    base_revision_id: nil)
     ApplicationRecord.transaction do
       tag.lock!
-      description = TagDescription.lock.find_by(
+      description = TagDescription.lock.find_by!(
           tag_id: tag.id, language_code: LANGUAGE_CODE)
-      description&.lock!
-      tag_name = tag.tag_name(LANGUAGE_CODE)
-      page = WikiPage.lock.find_by!(tag_name:)
+      page = WikiPage.lock.find(description.id)
       revision = Wiki::CompatibilityWriter.update!(
           page:, body:, updated_by_user:, message:,
           base_revision_id:)

backend/app/services/wiki/commit.rb

@@ -42,10 +42,10 @@ module Wiki
     end
 
     def self.content! page:, body:, created_user:, message: nil, base_revision_id: nil
-      tag = page.tag_name.tag
-      if tag && page.tag_name.language_code == 'ja'
+      description = TagDescription.find_by(id: page.id)
+      if description
         return TagDescriptionOperation.update!(
-            tag:, body:, updated_by_user: created_user,
+            tag: description.tag, body:, updated_by_user: created_user,
             message:, base_revision_id:)
       end