submit-social-housing-lettings-and-sales-data/app/models/validations/sales/shared_validations.rb

module Validations::Sales::SharedValidations
  def child_income_validation(record, field)
    if record.relat2 && record.income2 && (record.relat2 == "C" && record.income2.positive?)
      record.errors.add field, I18n.t("validations.financial.income.child_has_income")
    end
  end
end