Modify accepted email domains for devise

After customize email_regex of devise, know gitlabhq have email domain validation. So how we could add and/or remove the email domains? Follow these steps to modify which are accepted email domains:

1. Open config/initializers/devise.rb and find domains variable.

    domains = %w(kiranatama.com)
    config.email_regex = Regexp.new "\\A[^@]+@(#{domains.join('|')})\\z", true
   

2. Next modify domains value as you wish, for example if you wish to add wgs.co.id then write

    domains = %w(kiranatama.com wgs.co.id)
   

3. Whenever you change a configuration file, make sure you've restart the application before try it again.

And voila, next time you register an user with wgs.co.id email domain it won't reject you anymore.