Rails 4.0 with Devise. Nested attributes Unpermited parameters

Question

I am working on a web-app using Devise and Rails 4. I have a User model which I have extended with 2 extra form fields such that when a user signs up he can

Answer 1

Using rails 5.1 and devise 4.4.1 following is the shortest and works pretty good:

app/models/user.rb

after_initialize do
  build_profile if new_record? && profile.blank?
end

app/controllers/application_controller.rb

before_action :configure_permitted_parameters, if: :devise_controller?

def configure_permitted_parameters
  devise_parameter_sanitizer.permit(:sign_up, keys: [{ profile_attributes: :name }])
end

The key here is that you can do following without making separate controller:

• permit nested attributes
• build relation for form builder