Writing elegant HTML with HAML

_post.html.erb

<div id="single_post">
  <h2 class="post_title"><%= link_to post.title, post %></h2>
  <div class="post_content">
    <div class="post_date">
      Posted on <%= post.date.strftime '%e %B %Y' %>
    </div>
    <div class="posted_by">
      By: <%= post.author %>
    </div>
    <div class="comments_number">
      <%= post.comment_count %>
    </div>
    <% if summary %>
      <%= post.summary_html %>
      <%= link_to post do %>
        Continue Reading &raquo;
      <% end %>
    <% else %>
      <%= post.content_html %>
    <% end %>
    <ul class="post_tags">
      <% post.tags.each do |tag| %>
        <li>
          <a href="<%= tag_path(tag) %>">
            <%= tag.name %>
          </a>
        </li>
    </ul>
  </div>
</div>

_post.html.haml

#single_post
  %h2.post_title= link_to post.title, post
  .post_content
    .post_date
      Posted on #{post.date.strftime '%e %B %Y'}
    .posted_by
      By: #{post.author}
    .comments_number= post.comment_count
    - if summary
      = post.summary_html
      = link_to post do
        Continue Reading »
    - else
      = post.content_html
    %ul.post_tags
      - post.tags.each do |tag|
        %li
          %a{href: "/blog/tag/#{tag.name}"}= tag.name