validation_reflection_added_methods.rb

# lib/validation_reflection.rb
def install(base)
  @@reflected_validations.each do |validation_type|
    next if base.respond_to?(:"#{validation_type}_with_reflection")
    ignore_subvalidations = false

    if validation_type.kind_of?(::Hash)
      ignore_subvalidations = validation_type[:ignore_subvalidations]
      validation_type = validation_type[:method]
    end

    base.class_eval %{
      class << self
        def #{validation_type}_with_reflection(*attr_names)
          ignoring_subvalidations(#{ignore_subvalidations}) do
            #{validation_type}_without_reflection(*attr_names)
            remember_validation_metadata(:#{validation_type}, *attr_names)
          end
        end
        alias_method_chain :#{validation_type}, :reflection
      end
    }, __FILE__, __LINE__
  end
end