Nested Routes Files Rails - ruby-on-rails

Question

I have crafted some nested routes files using the below in my config/initializers:
class ActionDispatch::Routing::Mapper
def draw(routes_name, sub_path=nil)
if sub_path.present?
instance_eval(File.read(Rails.root.join("config/routes/#{sub_path}/#{routes_name}.rb")))
else
instance_eval(File.read(Rails.root.join("config/routes/#{routes_name}.rb")))
end
end
end
However, when used like this in the routes file:
Rails.application.routes.draw do
scope :api do
["v1"].map { |version| draw :base, "api/" + version }
end
end
The routes there do not appear nested as api/users etc. Not sure why the scope is getting ignored there.
EDIT: More Detailed Example
routes.rb
namespace :api, defaults: { format: :json } do
Rails.application.routes.draw do
["v1"].map { |version| draw :base, "api/" + version }
end
end
base.rb
namespace :v1 do
Rails.application.routes.draw do
[:identity].map { |path| draw path, "api/v1"}
end
end
identity.rb
Rails.application.routes.draw do
# Ensures proper namespace when fetching controllers, but does not add to path for routes
scope module: :identity do
namespace :users do
put '/', action: :update
patch '/', action: :update
get 'user_from_token', action: :update
end
end
end

Answer 1

Rails.application.routes.draw was redundant
# config/routes.rb
Rails.application.routes.draw do
scope :api do
["v1"].map { |version| draw :base, "api/" + version }
end
end
# config/routes/api/v1/base.rb
namespace :v1 do
# Rails.application.routes.draw do
[:identity].map { |path| draw path, "api/v1"}
# end
end
# config/routes/api/v1/identity.rb
# Rails.application.routes.draw do
# Ensures proper namespace when fetching controllers, but does not add to path for routes
scope module: :identity do
namespace :users do
put '/', action: :update
patch '/', action: :update
get 'user_from_token', action: :update
end
end
# end
$ rake routes
Prefix Verb URI Pattern Controller#Action
v1_users PUT /api/v1/users(.:format) v1/identity/users#update
PATCH /api/v1/users(.:format) v1/identity/users#update
v1_users_user_from_token GET /api/v1/users/user_from_token(.:format) v1/identity/users#update
rails_service_blob GET /rails/active_storage/blobs/:signed_id/*filename(.:format) active_storage/blobs#show
rails_blob_representation GET /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations#show
rails_disk_service GET /rails/active_storage/disk/:encoded_key/*filename(.:format) active_storage/disk#show
update_rails_disk_service PUT /rails/active_storage/disk/:encoded_token(.:format) active_storage/disk#update
rails_direct_uploads POST /rails/active_storage/direct_uploads(.:format) active_storage/direct_uploads#create