如何在rails关联中打印多个表中的数据？

# user.rb
class User < ApplicationRecord
  has_many :posts
end

# post.rb
class Post < ApplicationRecord
  belongs_to :user
  has_many :comments
end

# comment.rb
class Comment < ApplicationRecord
  belongs_to :post
end

# posts_controller.rb
class PostsController < ApplicationController
  def show
    @post = Post.includes(:user, :comments).find(params[:id])
  end
end

<!-- show.html.erb -->
<h1><%= @post.title %></h1>
<p>Author: <%= @post.user.name %></p>
<hr>
<h2>Comments:</h2>
<% @post.comments.each do |comment| %>
  <p><%= comment.content %></p>
<% end %>