app/views/request/index.html.erb
<%= render partial: 'tabs' %>
<h1><%= @title %></h1>
<div class="request-category_container">
<% InfoRequest.categories.each do |heading| %>
<% next unless heading.children.present? %>
<div class="request-category">
<h3><%= heading.title %></h3>
<ul>
<% heading.children.each do |category| %>
<% next unless category.category_tag.present? %>
<li>
<%= link_to category.title, request_list_path(tag: category.category_tag) %>
</li>
<% end %>
</ul>
</div>
<% end %>
</div>