Method: Sohm::Model.serial_attribute

Defined in:
lib/sohm.rb

.serial_attribute(name, cast = nil) ⇒ Object

Attributes that require CAS property



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# File 'lib/sohm.rb', line 834

def self.serial_attribute(name, cast = nil)
  if attributes.include?(name)
    raise ArgumentError,
          "#{name} is already used as a normal attribute."
  end
  serial_attributes << name unless serial_attributes.include?(name)

  if cast
    define_method(name) do
      # NOTE: This is a temporary solution, since we might use
      # composite objects (such as arrays), which won't always
      # do a reset
      @serial_attributes_changed = true
      cast[@serial_attributes[name]]
    end
  else
    define_method(name) do
      @serial_attributes_changed = true
      @serial_attributes[name]
    end
  end

  define_method(:"#{name}=") do |value|
    @serial_attributes_changed = true
    @serial_attributes[name] = value
  end
end