SCrypt::Password attribute type for Virtus

password.rb

require 'scrypt'

module Virtus
  class Attribute
    class Password < ::Virtus::Attribute
      primitive SCrypt::Password

      def coerce(value)
        value ? SCrypt::Password.new(value) : nil
      rescue SCrypt::Errors::InvalidHash
        nil
      end

      def value_coerced?(value)
        value.instance_of?(SCrypt::Password)
      end
    end
  end
end