<nav class="breadcrumbs" role="navigation" aria-label="<%= t('breadcrumbs.aria_label') %>">
  <ul class="unstyled-list">
    <li class="breadcrumbs__item"><%= link_to(t('layouts.home'), root_path) %></li>

    <% categories.each do |category| %>
      <li class="breadcrumbs__item" itemscope itemtype="http://data-vocabulary.org/Breadcrumb">
        <span class="visually-hidden">&gt;</span>
        <span class="breadcrumbs__divider" aria-hidden="true"></span>
        <%= link_to category.path, itemprop: "url" do %>
          <span itemprop="title"><%= category.title %></span>
        <% end %>
      </li>
    <% end %>

  </ul>
</nav>

<nav class="breadcrumbs" role="navigation" aria-label="<%= t('breadcrumbs.aria_label') %>">
  <ul class="unstyled-list">
    <li class="breadcrumbs__item" itemscope itemtype="http://data-vocabulary.org/Breadcrumb">
      <%= link_to root_path, itemprop: "url" do %>
      <span itemprop="title"><%= t('layouts.home') %></span>
      <% end %>
    </li>

    <% categories.each do |category| %>
      <li class="breadcrumbs__item" itemscope itemtype="http://data-vocabulary.org/Breadcrumb">
        <span class="visually-hidden">&gt;</span>
        <span class="breadcrumbs__divider" aria-hidden="true"></span>
        <%= link_to category.path, itemprop: "url" do %>
          <span itemprop="title"><%= category.title %></span>
        <% end %>
      </li>
    <% end %>

  </ul>
</nav>

Add micro data to home li item
Add micro data to home li item
