Unexpected nested route generated using Rails url_for helper - ruby-on-rails

Question

I'm using Rails 5 and my routes look something like:
Rails.application.routes.draw do
namespace :admin do
namespace :moderation do
resources :templates
end
resources :users, except: [:new, :create] do
namespace :moderation do
resources :messages, only: [:index, :show, :new, :create, :update, :edit] do
resources :message_replies, only: [:create, :edit, :update]
end
resources :templates
end
end
root "home#index"
end
end
I have models/admin/user.rb:
module Admin
class User < ::User
end
end
And models/admin/moderation/template.rb:
module Admin
module Moderation
class Template < ::Moderation::Template
end
end
end
Now when I try to generate the right route using url_for helper:
2.4.1 (main):0 > admin_user = Admin::User.first
2.4.1 (main):0 > admin_moderation_template = Admin::Moderation::Template.first
2.4.1 (main):0 > url_for([admin_user, admin_moderation_template])
NoMethodError: undefined method `admin_user_admin_moderation_template_url' for main:Object
Instead of getting admin_user_moderation_template_url I got admin_user_admin_moderation_template_url. Any help of how should I generate the right route in this case?

Answer 1

I wonder if you could resolve using this xxx_url() helper. In your case it'd be:
admin_user_moderation_template_url( user_id: admin_user.id, id: admin_moderation_template.id )
.
EDIT
Unfortunately I cannot try it as I would have to build the app you are working on. But as stated in this answer you can use symbols to create admin_user_moderation_template_url.
Try to run the following line and tell me if it works (I'm not sure user_id is in the right position, but it might work).
url_for( [:admin, :user, :moderation, :template, user_id: admin_user.id, id: admin_moderation_template.id ])
You need also an association between User and Template to be able to link them.