Back link

gistfile1.txt

#courses/show.html.erb

<% if permitted_referrer? %>
  <%= content_for(:before_content) do %>
    <%=  govuk_back_link_to(build_back_link, "Back to search results") %>
  <% end %>
<% end %>

#
def govuk_back_link_to(url, link_text = "Back")
  govuk_link_to(link_text, url, class: "govuk-back-link", data: {qa: "page-back"})
end

def permitted_referrer?
  referrer_host_and_path = [dark magic]
  referrer_host_and_path == Settings.search_and_compare_ui.base_url ||
      referrer_host_and_path == Settings.find_teach_training.base_url
end