app/views/comments/_responses_count.html.erb
<% if count > 0 %>
<%= link_to "", class: "js-toggle-children" do %>
<span class="show-children"><%= t("comments.comment.responses_show", count: count) %></span>
<span class="collapse-children"><%= t("comments.comment.responses_collapse", count: count) %></span>
<% end %>
<% else %>
<%= t("comments.comment.responses", count: 0) %>
<% end %>