Encrypt Column in Rails

encryptable.rb

# somewhere in lib or services

module Encryptable
  def encrypt_columns(*columns)
    columns.each do |column|
      if self.column_names.include?("encrypted_#{column}")
        self.send(:attr_accessor, column)

        define_method "#{column}=" do |value|
          self["encrypted_#{column}"] = self.class.verifier.generate(value)
        end

        define_method "#{column}" do
          self["encrypted_#{column}"].nil? ? nil : self.class.verifier.verify(self["encrypted_#{column}"])
        end
      end
    end
  end

  def verifier
    @verifier ||= ActiveSupport::MessageVerifier.new(SECRETS[:encrypt_key])
  end
end

# in DB you need create columns with name
# encrypted_password, encrypted_secret_key # encrypted_#{column_name}

# than in model

class MyModel < ApplicationRecord
  encrypt_columns :password, :secret_key
  ....
end