Generating routes VS Writing routes by hand

routes.rb

Application::Application.routes.draw do
  get '/my_favorites', to: 'favorites#my_index'

  resources :users do
    resources :favorites, only: [ :index ]
  end
 
  resources :favorites, only: [ :destroy ]

  namespace :bookmarklet do
    resources :favorites, only: [ :new, :create ]
  end
end

routes_by_hand.rb

Application::Application.routes.draw do
  delete '/favorites/:id',             to: 'favorites#destroy',            as: 'favorite'
  get    '/users/:user_id/favorites',  to: 'favorites#index',              as: 'user_favorites'
  get    '/my/favorites',              to: 'favorites#my_index',           as: 'my_favorites'

  get    '/bookmarklet/favorites/new', to: 'bookmarklet/favorites#new',    as: 'bookmarklet_new_favorite'
  post   '/bookmarklet/favorites',     to: 'bookmarklet/favorites#create', as: 'bookmarklet_favorites'
end