Module: Interactor::Validation::CoreExt

Included in:
Module
Defined in:
lib/interactor/validation/core_ext.rb

Overview

Minimal core extensions - no external dependencies

Instance Method Summary collapse

Instance Method Details

#class_attribute(*names) ⇒ Object

Simple class attribute implementation with inheritance support



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# File 'lib/interactor/validation/core_ext.rb', line 8

def class_attribute(*names)
  names.each do |name|
    ivar_name = "@#{name}"

    # Class-level reader - checks own value, then parent
    define_singleton_method(name) do
      if instance_variable_defined?(ivar_name)
        instance_variable_get(ivar_name)
      elsif superclass.respond_to?(name)
        # When reading from parent, ensure we get our own copy first
        parent_value = superclass.public_send(name)
        # Deep copy parent value if it hasn't been set on this class yet
        if parent_value && !instance_variable_defined?(ivar_name)
          copied_value = deep_copy(parent_value)
          instance_variable_set(ivar_name, copied_value)
          copied_value
        else
          parent_value
        end
      end
    end

    # Class-level writer
    define_singleton_method("#{name}=") do |val|
      instance_variable_set(ivar_name, val)
    end

    # Instance-level reader delegates to class
    define_method(name) { self.class.public_send(name) }
  end
end