title: Rails 4 client side validation
body: <p>Since upgrading my site to Rails 4, the client-side-validations gem has stopped working for me. I have had a look at the various alternatives such as jquery-validation-rails and judge, which involve writing quite a bit of javascript, especially for a site so large. And in the case of jquery-validation-rails, re-doing all the validation rules client side. Considering Rails is such a popular framework, it surprises me that there is no 'easy' option. Is there any gem which anyone else is aware of, which does validation as well as the client-side-validation gem?</p>
  
  <p>Or is the best alternative to use the ModelName.validators method mixed with some ajax, and do the validation through the jquery-validation-rails gem?</p>