Merge pull request #4315 from sul-dlss/index-rss

Update index.rss.builder from upstream.

app/views/catalog/index.rss.builder

@@ -1,14 +1,14 @@
 # frozen_string_literal: true
 
-xml.instruct! :xml, :version=>"1.0"
-xml.rss(:version=>"2.0") {
+xml.instruct! :xml, version: "1.0"
+xml.rss(version: "2.0") {
   xml.channel {
-    xml.title(t('blacklight.search.title', :application_name => application_name))
-    xml.link(search_action_url(search_state.to_h))
-    xml.description(t('blacklight.search.title', :application_name => application_name))
+    xml.title(t('blacklight.search.page_title.title', constraints: render_search_to_page_title(params), application_name: application_name))
+    xml.link(search_action_url(search_state.to_h.merge(only_path: false)))
+    xml.description(t('blacklight.search.page_title.title', constraints: render_search_to_page_title(params), application_name: application_name))
     xml.language('en-us')
-    @document_list.each_with_index do |document, document_counter|
-      xml << Nokogiri::XML.fragment(render_document_partials(document, blacklight_config.view_config(:rss).partials, document_counter: document_counter))
+    @response.documents.each_with_index do |document, document_counter|
+      xml << render_xml_partials(document, blacklight_config.view_config(:rss).partials, document_counter: document_counter)
     end
   }
 }