Nokogiri split nested elements that has same class - ruby-on-rails

Question

I'm scraping a blog which has post and comments. Comments also have nested replies. I need to fetch all replies as a separate comment. But all nested comments and replies have the same classname.
Example html that i want to scrape :
<div class='post'>
<p>bla bla.</p>
</div>
<div class='comment'>
<p>Comment1 <p>
<div class='comment'>
<p>Answer 1</p>
</div>
</div>
<div class='comment'>
<p>Comment2 <p>
<div class='comment'>
<p>Answer 1</p>
<div class='comment'>
<p>Answer 2</p>
</div>
</div>
</div>
<div class='comment'>
<p>Comment3 <p>
<div class='comment'>
<p>Answer 1</p>
<div class='comment'>
<p>Answer 2</p>
<div class='comment'>
<p>Answer 3</p>
<div class='comment'>
<p>Answer 4</p>
</div>
</div>
</div>
</div>
</div>
How can i split all nested comments and replies and save all of them as comments. When i do like :
comments = doc.css('.comment')
comments.each do |comment|
...
I can't get replies in a comment as a separate record. According to the above example, my code gives me just 3 comments including replies.

Answer 1

You can search nested p tags like css('.comment p')
html = <<~HTML
<div class='post'>
<p>bla bla.</p>
</div>
<div class='comment'>
<p>Comment1 <p>
<div class='comment'>
<p>Answer 1</p>
</div>
</div>
<div class='comment'>
<p>Comment2 <p>
<div class='comment'>
<p>Answer 1</p>
<div class='comment'>
<p>Answer 2</p>
</div>
</div>
</div>
<div class='comment'>
<p>Comment3 <p>
<div class='comment'>
<p>Answer 1</p>
<div class='comment'>
<p>Answer 2</p>
<div class='comment'>
<p>Answer 3</p>
<div class='comment'>
<p>Answer 4</p>
</div>
</div>
</div>
</div>
</div>
HTML
Just parse this way
doc = Nokogiri::HTML(html)
comments = doc.css('.comment p')
Using this code you will get empty tags <p>\n </p>, you can delete them.
comments.css('p').each { |p| comments.delete(p) if p.content.strip.empty? }
puts comments.to_html
<!-- will print -->
<p>Comment1 </p>
<p>Answer 1</p><p>Comment2 </p>
<p>Answer 1</p><p>Answer 2</p><p>Comment3 </p>
<p>Answer 1</p><p>Answer 2</p><p>Answer 3</p><p>Answer 4</p>