<span class="diff-list">
  <% diff[:added_post_ids].each do |post_id| %>
    <ins>
      <%= link_to post_id, post_path(post_id) %><%#
    %><%= link_to "»", pool_versions_path(search: { post_id: post_id }) %>
    </ins>
  <% end %>
</span>

<span class="diff-list">
  <% diff[:removed_post_ids].each do |post_id| %>
    <del>
      <%= link_to post_id, post_path(post_id) %><%#
    %><%= link_to "»", pool_versions_path(search: { post_id: post_id }) %><%#
  %></del>
  <% end %>
</span>
