app/components/budgets/groups_and_headings_component.html.erb
<div id="groups_and_headings" class="groups-and-headings">
<% budget.groups.each do |group| %>
<h2 id="<%= group.name.parameterize %>"><%= group.name %></h2>
<ul class="headings-list">
<% group.headings.sort_by_name.each do |heading| %>
<li class="heading">
<%= link_to_unless(
(budget.informing? || budget.finished?),
heading.name,
budget_investments_path(budget.id, heading_id: heading.id)
) %>
<%= price(heading) %>
</li>
<% end %>
</ul>
<% end %>
</div>