Render embedded documents using components.

app/components/spotlight/solr_document_legacy_embed_component.html.erb

@@ -0,0 +1,11 @@
+<% if body.present? %>
+  <%= body %>
+<% elsif partials? %>
+  <% partials.each do |partial| %>
+    <%= partial %>
+  <% end %>
+<% elsif embed? %>
+  <%= embed %>
+<% elsif thumbnail? %>
+  <%= thumbnail %>
+<% end %>

app/components/spotlight/solr_document_legacy_embed_component.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+# Render an document suitable for embedding on a feature page.
+module Spotlight
+  class SolrDocumentLegacyEmbedComponent < Blacklight::DocumentComponent
+  end
+end

app/models/spotlight/blacklight_configuration.rb

@@ -122,7 +122,10 @@ def blacklight_config
 
         config.view.embed!
         # This is blacklight-gallery's openseadragon partial
-        config.view.embed.partials ||= ['openseadragon']
+        unless config.view.embed.document_component
+          config.view.embed.partials ||= ['openseadragon']
+          config.view.embed.document_component = Spotlight::SolrDocumentLegacyEmbedComponent
+        end
         config.view.embed.if = false
 
         # blacklight-gallery requires tile_source_field

app/views/spotlight/sir_trevor/blocks/_embedded_document.html.erb

@@ -0,0 +1,8 @@
+<div class="box" data-id="<%= document.id %>">
+  <% view_config = blacklight_config.view_config(:embed) %>
+  <%= render (view_config.document_component || Spotlight::SolrDocumentLegacyEmbedComponent).new((Blacklight.version > '8.0' ? :document : :presenter) => document_presenter(document), counter: nil) do |component| %>
+    <% component.with_partial do %>
+      <%= render_document_partials document, view_config.partials, component: component, document_counter: nil, view_config: view_config, block: local_assigns[:block], **(view_config.locals) %>
+    <% end if view_config&.partials&.any? %>
+  <% end %>
+</div>

app/views/spotlight/sir_trevor/blocks/_solr_documents_embed_block.html.erb

@@ -14,12 +14,9 @@
       <%# Render the openseadragon viewer from blacklight-gallery.
         # Settings in blacklight_configuration.rb %>
         <% solr_documents_embed_block.each_document do |block_options, document| %>
-          <div class="box" data-id="<%= document.id %>">
-            <% view_config = blacklight_config.view_config(:embed) %>
-            <%= render_document_partials document, view_config.partials, (view_config.locals || {}).reverse_merge(block: solr_documents_embed_block, view_config: view_config) %>
-          </div>
-          <% end %>
-        </div>
+          <%= render '/spotlight/sir_trevor/blocks/embedded_document', document: document, block: solr_documents_embed_block %>
+        <% end %>
+      </div>
     </div>
   <% end %>
 

blacklight-spotlight.gemspec

@@ -23,7 +23,7 @@ these collections.)
   s.add_dependency 'activejob-status'
   s.add_dependency 'acts-as-taggable-on', '>= 5.0', '< 12'
   s.add_dependency 'autoprefixer-rails'
-  s.add_dependency 'blacklight', '>= 7.18', '< 9'
+  s.add_dependency 'blacklight', '>= 7.19', '< 9'
   s.add_dependency 'blacklight-gallery', '>= 3.0', '< 5'
   s.add_dependency 'bootstrap_form', '>= 4.1', '< 6'
   s.add_dependency 'breadcrumbs_on_rails', '>= 3.0', '< 5'

spec/views/spotlight/sir_trevor/blocks/_solr_documents_embed_block.html.erb_spec.rb

@@ -9,11 +9,19 @@
   let(:doc) { blacklight_config.document_model.new(id: 1) }
   let(:blacklight_config) do
     Blacklight::Configuration.new do |config|
-      config.view.embed(partials: %w[a b c], locals: { a: 1 })
+      config.view.embed(
+        document_component: Spotlight::SolrDocumentLegacyEmbedComponent,
+        partials: %w[a b c],
+        locals: { a: 1 }
+      )
     end
   end
   let(:stub_presenter) do
-    instance_double(Blacklight::DocumentPresenter, heading: 'blah', thumbnail: thumbnail_presenter)
+    instance_double(Blacklight::DocumentPresenter, document: doc, heading: 'blah',
+                                                   thumbnail: thumbnail_presenter,
+                                                   view_config: blacklight_config.view.embed,
+                                                   field_presenters: [],
+                                                   display_type: nil)
   end
 
   let(:thumbnail_presenter) { instance_double(Blacklight::ThumbnailPresenter, exists?: true, thumbnail_tag: 'thumb') }