Client Side Validations on Heroku-Collection of common programming errors

I am using https://github.com/bcardarella/client_side_validations to validate my sign up form.

I am validating the uniqueness of username and email in that form:

validates_uniqueness_of :username, :email, :case_sensitive => false

The database validations for uniqueness are taking place fine on my local machine. But when I try them on Heroku, they do not work.

Edit:

Here is the sign up form (I am using devise):

 :user, :validate => true, :url => user_registration_path do |f| %>
     "signupin-label span-2" %> "signupin-field last", :autocomplete => "off"%>
     "signupin-label span-2" %> "signupin-field last", :autocomplete => "off" %>
     "signupin-label span-2" %> "signupin-field last", :autocomplete => "off" %>
     "signupin-label span-2" %> "signupin-field last", :autocomplete => "off" %>
     "signUpButton"  %>

I am getting following error:

rails.validations.js:154

Uncaught TypeError: Object (?-mix:^(a-zA-Z*?|([a-zA-Z0-9]+_?)*)$) has no method ‘test’

Can someone please guide?

Thanks!

1. I found the issue. I was not validating the format of username on the client side and that was causing this error. Thanks for your help.

Originally posted 2013-11-13 09:50:02.