bcp-47 coding we have been using for variants have capitalization rules. On the other hand the UI makes the whole code uppercase.

So ady-Latn-TR-t-ady-cyrl becomes:

It should be kept as it comes from the database.

Also, as the code is not intelligible for everybody, actually the provided "variant_name" should be shown when presenting variants (here Adığabze (Latin, Turk, transliteratse - Batı Çerkesçesi)):

Here is the related definition:

  {
    locale_name: 'ady',
    variant_name: 'Adığabze (Latin, Turk, transliteratse - Batı Çerkesçesi)',
    variant_token: 'ady-Latn-TR-t-ady-cyrl',
  },