how to show particular user created post and comment in rails

ex:i have four users: 1)userx,2)usery,3)userA,4)userB

in 4 users i want to display only userA post and comment, I'm having trouble understanding how to show a single user's created post and comments.

      post model

          belongs_to :user
          has_many :comments 

      comment model


    belongs_to :post
    belongs_to :user

       user model

    has_many :posts
    has_many :comments

     routes.rb

     resources :posts do
     resources :comments
       end

    in controllers

     def index
     @users = User.includes(:posts, :comments)
        end

     in your views:

      Views #1

     <% @users.each do |user| %>
     <% user.posts.each do |post| %>
     <%= post.post_name %>
    <%= post.post_description %>
     <% end %>

   <% user.comments.each do |comment| %>
   <%= comment.content %>
    <% end %>
   <% end %>

   Views #2:

      <% @users.each do |user| %>
   <% user.posts.each do |post| %>
     <%= post.post_name %>
      <%= post.post_description %>
      <% post.comments.each do |comment| %>
     <%= comment.content %>
    <% end %>
   <% end %>
    <% end %>

i check with this code, but it show all user data i want to show perticular user date pls help me