Выполнение следующего в консоли Rails должно сработать:
old_locale = "es_XX"
new_locale = "es"
DB.exec <<~SQL
UPDATE users
SET locale = '#{new_locale}'
WHERE locale = '#{old_locale}'
SQL
DB.exec <<~SQL
UPDATE site_settings
SET value = '#{new_locale}'
WHERE name = 'default_locale' AND value = '#{old_locale}'
SQL
DB.exec <<~SQL
UPDATE translation_overrides
SET locale = '#{new_locale}'
WHERE locale = '#{old_locale}'
SQL
DB.exec <<~SQL
UPDATE theme_translation_overrides
SET locale = '#{new_locale}'
WHERE locale = '#{old_locale}'
SQL
def fix_search_data(model)
key = "#{model}_id"
table = "#{model}_search_data"
puts "Миграция #{table} на новый локаль."
sql = <<~SQL
UPDATE #{table}
SET locale = '#{new_locale}'
WHERE #{key} IN (
SELECT #{key}
FROM #{table}
WHERE locale = '#{old_locale}'
LIMIT 100000
)
SQL
loop do
count = DB.exec(sql)
break if count == 0
puts "Мигрировано #{count} строк #{table} на новый локаль."
end
end
%w[category tag topic user].each { |model| fix_search_data(model) }