class ActiveModel::Type::ImmutableString

person.active # => “aye”
person.active = true
person = Person.new
end
attribute :active, :immutable_string, true: “aye”, false: “nay”
include ActiveModel::Attributes
class Person
declaring an attribute:
false will be cast to "f". These strings can be customized when
are treated differently, however: true will be cast to "t" and
Values are coerced to strings using their to_s method. Boolean values
person.name.frozen? # => true
person.name # => “1”
person.name = 1
person = Person.new
end
attribute :name, :immutable_string
include ActiveModel::Attributes
class Person
frozen strings.
Attribute type to represent immutable strings. It casts incoming values to
= Active Model ImmutableString Type

def cast_value(value) 

def cast_value(value)
  case value
  when true then @true
  when false then @false
  else value.to_s.freeze
  end
end

def initialize(**args) 

def initialize(**args)
  @true  = -(args.delete(:true)&.to_s  || "t")
  @false = -(args.delete(:false)&.to_s || "f")
  super
end

def serialize(value) 

def serialize(value)
  case value
  when ::Numeric, ::Symbol, ActiveSupport::Duration then value.to_s
  when true then @true
  when false then @false
  else super
  end
end

def serialize_cast_value(value) # :nodoc:

:nodoc: 
def serialize_cast_value(value) # :nodoc:
  value
end

def type 

def type
  :string
end