feature: Allow locales with region

example pt-PT

app/models/concerns/spina/translated_content.rb

@@ -7,14 +7,14 @@ module TranslatedContent
     included do
       # Store each locale's content in [locale]_content as an array of parts
       Spina.locales.each do |locale|
-        attr_json "#{locale}_content".to_sym, AttrJson::Type::SpinaPartsModel.new, array: true, default: -> { [] }
-        attr_json_setter_monkeypatch "#{locale}_content".to_sym
-        attr_json_accepts_nested_attributes_for "#{locale}_content".to_sym
+        attr_json "#{locale.to_s.underscore}_content".to_sym, AttrJson::Type::SpinaPartsModel.new, array: true, default: -> { [] }
+        attr_json_setter_monkeypatch "#{locale.to_s.underscore}_content".to_sym
+        attr_json_accepts_nested_attributes_for "#{locale.to_s.underscore}_content".to_sym
       end
     end
 
     def find_part(name)
-      send("#{I18n.locale}_content").find { |part| part.name.to_s == name.to_s }
+      send("#{I18n.locale.to_s.underscore}_content").find { |part| part.name.to_s == name.to_s }
     end
   end
 end