# File lib/active_model/errors.rb, line 215 def add_on_blank(attributes, options = {}) if options && !options.is_a?(Hash) options = { :message => options } ActiveSupport::Deprecation.warn \ "ActiveModel::Errors#add_on_blank(attributes, custom_message) has been deprecated.\n" + "Instead of passing a custom_message pass an options Hash { :message => custom_message }." end [attributes].flatten.each do |attribute| value = @base.send(:read_attribute_for_validation, attribute) add(attribute, :blank, options) if value.blank? end end