routes.rb

Rails.application.routes.draw do
  namespace :v1 do
    get '/employees' => 'employees#index'
    get '/employees/:id' => 'employees#show'
    post '/employees' => 'employees#create'
    patch '/employees/:id' => 'employees#update'
    delete '/employees/:id' => 'employees#destroy'
  end

  namespace :v2 do
    get '/employees' => 'employees#index'
    get '/employees/:id' => 'employees#show'
    post '/employees' => 'employees#create'
    patch '/employees/:id' => 'employees#update'
    delete '/employees/:id' => 'employees#destroy'
  end
end