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class ActiveRecord::Encryption::EncryptedAttributeType

An ActiveModel::Type::Value that encrypts/decrypts strings of text.

This is the central piece that connects the encryption system with encrypts declarations in the model classes. Whenever you declare an attribute as encrypted, it configures an EncryptedAttributeType for that attribute.

Inherits From

Attributes

[R] cast_type
[R] scheme

Public class methods

new(scheme:, cast_type: ActiveModel::Type::String.new, previous_type: false, default: nil)

Options

  • :scheme - A Scheme with the encryption properties for this attribute.

  • :cast_type - A type that will be used to serialize (before encrypting) and deserialize (after decrypting). ActiveModel::Type::String by default.

Source code GitHub 
# File activerecord/lib/active_record/encryption/encrypted_attribute_type.rb, line 23
def initialize(scheme:, cast_type: ActiveModel::Type::String.new, previous_type: false, default: nil)
  super()
  @scheme = scheme
  @cast_type = cast_type
  @previous_type = previous_type
  @default = default
end

Public instance methods

cast(value)

Source code GitHub 
# File activerecord/lib/active_record/encryption/encrypted_attribute_type.rb, line 31
def cast(value)
  cast_type.cast(value)
end

changed_in_place?(raw_old_value, new_value)

Source code GitHub 
# File activerecord/lib/active_record/encryption/encrypted_attribute_type.rb, line 51
def changed_in_place?(raw_old_value, new_value)
  old_value = raw_old_value.nil? ? nil : deserialize(raw_old_value)
  old_value != new_value
end

deserialize(value)

Source code GitHub 
# File activerecord/lib/active_record/encryption/encrypted_attribute_type.rb, line 35
def deserialize(value)
  cast_type.deserialize decrypt(value)
end

encrypted?(value)

Source code GitHub 
# File activerecord/lib/active_record/encryption/encrypted_attribute_type.rb, line 47
def encrypted?(value)
  with_context { encryptor.encrypted? value }
end

serialize(value)

Source code GitHub 
# File activerecord/lib/active_record/encryption/encrypted_attribute_type.rb, line 39
def serialize(value)
  if serialize_with_oldest?
    serialize_with_oldest(value)
  else
    serialize_with_current(value)
  end
end

support_unencrypted_data?()

Source code GitHub 
# File activerecord/lib/active_record/encryption/encrypted_attribute_type.rb, line 61
def support_unencrypted_data?
  ActiveRecord::Encryption.config.support_unencrypted_data && scheme.support_unencrypted_data? && !previous_type?
end

Definition files