url_validation

Simple URL validator for Rails 3.

This gem adds a very simple URL format validator to be used with Active Record models in Rails 3.0. It supports localized error messages. It can validate many different kinds of URLs, including HTTP and HTTPS. It supports advanced validation features like sending HEAD requests to URLS to verify that they are valid endpoints.

Add the gem to your project's Gemfile:

gem "url_validation"

This gem is an EachValidator, and thus is used with the validates method:

class User < ActiveRecord::Base
  validates :terms_of_service_link,
            presence: true,
            url:      true
end

There are other options to fine-tune your validation; see the {UrlValidator} class for more, and for a list of error message localization keys.