Initial experiment with adding external dcp resources as items

app/controllers/digital_collections_resources_controller.rb

@@ -0,0 +1,7 @@
+class DigitalCollectionsResourcesController < Spotlight::ResourcesController
+  private
+
+  def resource_class
+    DigitalCollectionsResource
+  end
+end

app/models/digital_collections_resource.rb

@@ -0,0 +1,34 @@
+class DigitalCollectionsResource < Spotlight::Resource
+  # TODO: What is this indexing pipeline
+  def self.indexing_pipeline
+    @indexing_pipeline ||= super.dup.tap do |pipeline|
+      pipeline.transforms = [Spotlight::Etl::Sources::SourceMethodSource(:to_solr)] + pipeline.transforms
+
+      # PR for implementing an ETL-like pattern for indexing documents
+      #   https://github.com/projectblacklight/spotlight/pull/2625
+      # # if, say, you wanted to feed the transform with multiple source documents
+      # #   (here, by calling the `#iiif_manifest` method on the DlmeJson instance);
+      # #   previously, the #to_solr method of the document builder would have done this extraction
+      # # pipeline.sources = [Spotlight::Etl::Sources::SourceMethodSource(:iiif_manifests)]
+      # pipeline.transforms = [
+      #   ->(data, p) { data.merge(DlmeJsonResourceBuilder.new(p.context.resoure).to_solr) }
+      # ]
+
+      # Spotlight::Resource::IiifHarvester
+      # pipeline.sources = [Spotlight::Etl::Sources::SourceMethodSource(:iiif_manifests)]
+      # pipeline.transforms = [
+      #   ->(data, p) { data.merge(p.source.to_solr(exhibit: p.context.resource.exhibit)) }
+      # ] + pipeline.transforms
+
+      # Spotlight::Resource::JsonUpload
+      # pipeline.sources = [Spotlight::Etl::Sources::StoredData]
+      # pipeline.transforms = [
+      #   Spotlight::Etl::Transforms::IdentityTransform
+      # ] + pipeline.transforms
+    end
+  end
+
+  def to_solr
+    # TODO
+  end
+end

app/views/catalog/_viewer_default.html.erb

@@ -1,7 +1,7 @@
-<!--
-Overrides _openseadragon_default.html.erb from blacklight-gallery
-Adds sequenceMode to showReferenceStrip for images with count > 1
--->
+<%#
+  Overrides _openseadragon_default.html.erb from blacklight-gallery
+  Adds sequenceMode to showReferenceStrip for images with count > 1
+%>
 
 <%
   image = document.to_openseadragon(blacklight_config.view_config(:show))

app/views/digital_collections_resources/_form.html.erb

@@ -0,0 +1,9 @@
+<%= bootstrap_form_for([current_exhibit, @resource.becomes(DigitalCollectionsResource)], as: :resource) do |f| %>
+  <%= f.text_field :url  %>
+  <div class="form-actions">
+    <div class="primary-actions">
+      <%= cancel_link @resource, :back, class: 'btn btn-secondary' %>
+      <%= f.submit t('.add_item'), class: 'btn btn-primary' %>
+    </div>
+  </div>
+<% end if can? :manage, @resource %>

config/initializers/spotlight_initializer.rb

@@ -12,12 +12,14 @@
 # ==> Appearance configuration
 # Spotlight::Engine.config.exhibit_main_navigation = [:curated_features, :browse, :about]
 Spotlight::Engine.config.resource_partials = [
-  # 'spotlight/resources/external_resources_form',
+  'spotlight/resources/external_resources_form',
   'spotlight/resources/upload/form',
   'spotlight/resources/csv_upload/form',
   # 'spotlight/resources/json_upload/form'
   'spotlight/resources/iiif/form'
 ]
+Spotlight::Engine.config.external_resources_partials = []
+# Spotlight::Engine.config.external_resources_partials = ['digital_collections_resources/form']
 # Spotlight::Engine.config.external_resources_partials = ["portal_resources/form"]
 # Spotlight::Engine.config.default_browse_index_view_type = :gallery
 # Spotlight::Engine.config.default_contact_email = nil