Nested namespaces for controllers in Rails

Question

I reorganized the rails application in such a way that for each auxiliary resource I create a controller - the corresponding namespace.

api/v1/app/controller/manager.rb
api/v1/app/controller/manager/user.rb
api/v1/app/controller/manager/controller.rb
api/v1/app/controller/admin.rb
api/v1/app/controller/user.rb
api/v1/app/controller/controller.rb

The definition of the user resource class in the manager namespace is as follows:

class Api::V1::Manager::UserController < ApplicationController

This controller is accessible via route.rb:

 resources :manager , only: [:show ] do
   resources :user, only: [:index], controller: 'manager/user'
 end

which generates

/api/v1/manager/:manager_id/user(.:format)       api/v1/manager/manager#index {:format=>"json"}

All models are under

app/models/manager.rb
app/models/user.rb

When I want to access the model Managerinside the controller api/v1/app/controller/manager/user.rbor in api/v1/app/controller/manager.rbfor example

class Api::V1::ManagerController < ApplicationController
  def index 
     Manager.find(...)
  end
end

class Api::V1::Manager::UserController < ApplicationController
  def index 
     Manager.find(...)
  end
end

I get these errors

{"error":"uninitialized constant Api::V1::Manager::UserController::Manager"}%   
{"error":"uninitialized constant Api::V1::Manager::Manager"}%                                                                                 

Calls are handled by the correct controllers:

Processing by Api::V1::Manager::UserController#index as JSON

The solution is to use a double colon prefix with a call

`::Manager.find(...)`.

I can use all other models Admin.find(...)or Controller.firstnormally. Just Manager.find(..)not working.

ManagerResource .

- , ?

api/v1/app/controller/api/v1/foo/customer_controller.rb
api/v1/app/controller/api/v1/manager_customer_controller.rb

(webrick) . Manager.first - , Manager...,

`uninitialized constant Api::V1::Foo::UserController::Manager` 
`uninitialized constant Api::V1::ManagerUserController::Manager`
`uninitialized constant Api::V1::*any_controller*::Manager`

.

Controller.first , . api/v1/app/controller/controller.rb. .

@Andrey Deineko , , .

, , , ?

II

, . .

Manger. Manager.class Class. :

module Api
 module V1
  class Manager < Api::ApiBaseController
   def index
     puts User.class #=> class
     puts Manager.class #=> module 
     puts ::Manager.class #=> class
     puts Controller.class #=> class
     ...
   end
  end
 end
end


class Api::V1::Manager < Api::ApiBaseController
   def index
     puts User.class #=> class
     puts Manager.class #=> {"error":"uninitialized constant Api::V1::ManagerController::Manager"}
     puts ::Manager.class  
     puts Controller.class  
     ...
   end
 end

, ::Manager , , , ,

 class Api::V1::Manager < Api::ApiBaseController
   def index
     puts User.class #=> class
     ::puts Manager.class #=> class
     puts Manager.class  #=> class
     puts Controller.class  #=> class
     ...
   end
 end

Api::V1::... .

Answer 1

Ruby.

, .

, .

, Manager ::, , .

Rails auto/preloading , .

Rails.

Answer 2

:

class Api::V1::ManagerController << ApplicationController

:

class Api::V1::ManagerController < ApplicationController

<<, <

Answer 3

api/v1/app/controller/manager.rb
api/v1/app/controller/manager/user.rb
api/v1/app/controller/manager/controller.rb
api/v1/app/controller/admin.rb
api/v1/app/controller/user.rb
api/v1/app/controller/controller.rb

:

app/controller/api/v1.......

.