app/views/parents/show.html.erb
<%= page_title 'Parents', @child.display_name %>
<% if @parents.empty? %>
<p class='lead'>Could not find parents for <%= @child.display_name %>.</p>
<%= link_to "Back to #{@child.display_name}", receptacle_path(@child) %>
<% else %>
<p class='lead'>Multiple parents for <%= @child.display_name %>.</p>
<div class="receptacle-list">
<%= render partial: 'parent', collection: @parents %>
</div>
<% end %>