Override Rails Devise Controllers and get routing errors - ruby-on-rails

Question

I'm overriding Devise controllers in Rails like that:
module Api
module V1
module Devise
class RegistrationsController < Devise::RegistrationsController
....
end
end
end
end
And thats my routes:
Rails.application.routes.draw do
root 'application#index'
devise_for :users
devise_for :taxi_drivers, only: :passwords
resources :taxi_drivers_groups, only: %i[index new create edit update]
namespace :api do
namespace :v1 do
devise_for :users,
defaults: { format: :json },
class_name: 'User',
skip: %i[registrations sessions passwords],
path: '',
path_names: { sign_in: 'login', sign_out: 'logout' }
devise_scope :user do
post 'signup', to: 'devise/registrations#create'
post 'login', to:'devise/sessions#create'
delete 'logout', to: 'devise/sessions#destroy'
post 'password_recover', to: 'devise/passwords#create'
put 'password_recover', to: 'devise/passwords#update'
end
end
end
end
And I'm getting an error when I try to pass my tests:
ActionController::RoutingError: uninitialized constant Api::V1::Devise::RegistrationsController
And in my test file:
test 'user invalid sigup with empty fields' do
#valid_signup_params[:name] = nil
post('/api/v1/signup.json', { user: #valid_signup_params }, headers: { format: :json })
assert_equal last_response.status, 422
assert_equal json_response['errors']['name'].count, 1
end
Do you have any idea how to fix this error?
Thanks!

Answer 1

The issues comes from a constant clash between the newly defined controller and the existing one.
Replacing class RegistrationsController < Devise::RegistrationsController with class RegistrationsController < ::Devise::RegistrationsController is fixing the issue as ruby knows that he has to find the RegistrationsController class in the previously defined Devise module and not in the current definition.