#428

backend/app/models/locale.rb

@@ -6,7 +6,13 @@ class Locale < ApplicationRecord
   belongs_to :language, foreign_key: :language_code, primary_key: :code
   belongs_to :script, foreign_key: :script_code, primary_key: :code
 
-  enum :code, ja: 'ja', ain_kana: 'ain-Kana'
+  # 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')