routes.rb

Backend::Application.routes.draw do

    namespace :manager do

      resources :projects do
        scope :module => "projects" do
          resources :activities, as: 'activity', path: 'activity', only: [:index, :destroy]
          resources :milestones
          resources :tickets
          resources :invoices
          resources :attachments, as: 'files', path: 'files', controller: 'files'
        end
      end
    end

    root to: 'manager/projects#index'

end