app/views/extranet/posts/categories/index.html.erb
<% content_for :title, Communication::Extranet::Post::Category.model_name.human(count: 2) %>
<ul>
<% @categories.each do |category|
l10n = category.localization_for(current_language)
next if l10n.nil?
%>
<li><%= link_to l10n, posts_category_path(slug: l10n.slug) %></li>
<% end %>
</ul>