Updated routes

config/routes.rb

@@ -3,7 +3,9 @@ Rails.application.routes.draw do
   devise_for :users
   devise_scope :user do
   	authenticated :user do
-  		resources :posts
+  		resources :posts do
+        resources :comments, only: [:new, :create]
+      end
   		root to: 'posts#index', as: :authenticated_root
   	end
   	unauthenticated :user do