How to add username field to devise gem?

Question

Here is what I tried,

1. rails g migration add_username_to_hrs

2. bundle exec rake db:migrate

3. added the

Answer 1

If you are using rails 4 then put below code in application controller

class ApplicationController < ActionController::Base
 before_action :configure_permitted_parameters, if: :devise_controller?

 protected

 def configure_permitted_parameters
  devise_parameter_sanitizer.for(:sign_up) << :username
 end
end