```ruby
ConstructorPages::Engine.routes.draw do
  scope '/admin' do
    resources :pages, except: [:show]
    resources :templates, except: [:show] do
      resources :fields, except: [:show, :index]
    end  

    %w{page template field}.each do |c|
      %w{up down}.each do |d|
        get "#{c.pluralize}/move/#{d}/:id" => "#{c.pluralize}#move_#{d}", as: "#{c}_move_#{d}"
      end
    end

    get '/pages/:page/new' => 'pages#new', as: :new_child_page
  end

  root :to => 'pages#show'

  get '*all/search/:what_search' => 'pages#search', format: false
  get '*all.:format' => 'pages#show'
  get '*all' => 'pages#show'
end
```

Move new_child to pages resources.
user
```ruby
ConstructorPages::Engine.routes.draw do
  scope '/admin' do
    resources :pages, except: [:show] do
      get :new_child, on: :member
    end

    resources :templates, except: [:show] do
      resources :fields, except: [:show, :index]
    end  

    %w{page template field}.each do |c|
      %w{up down}.each do |d|
        get "#{c.pluralize}/move/#{d}/:id" => "#{c.pluralize}#move_#{d}", as: "#{c}_move_#{d}"
      end
    end
  end

  root :to => 'pages#show'

  get '*all/search/:what_search' => 'pages#search', format: false
  get '*all.:format' => 'pages#show'
  get '*all' => 'pages#show'
end
```
assistant