db/migrate/20171026200500_en_to_en_cy.rb


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class EnToEnCy < ActiveRecord::Migration[5.1]
  def up
    User.find_each do |user|
      if user.locale == 'en'
        user.update(locale: 'en-CY')
      end
    end
  end

  def down
    User.find_each do |user|
      if user.locale == 'en-CY'
        user.update(locale: 'en')
      end
    end
  end
end