Localized EachValidator

Localized EachValidator is a subclass of ActiveRecord's EachValidator that makes it easier to write a localized validator with Rails 3's localization. It's small and simple.

Add this gem to your project's Gemfile, or to your own validator gem's dependencies. Then, sublass LocalizedEachValidator and provide the error_key and override the valid? method, like so:

class FourValidator < ActiveRecord::EachValidator
  error_key :must_be_four

  def valid?(record, field, value)
    value == 4
  end
end

Now, users of your validator can create a localization YAML file like so:

en:
  activerecord:
	errors:
	  messages:
	    must_be_four: This number must be four.

See the {LocalizedEachValidator} class documentation for more information.