Add an index status field to the sidecars for resource harvesters to …

…inject arbitrary information

app/models/concerns/spotlight/solr_document.rb

@@ -24,9 +24,9 @@ module SolrDocument
     ##
     # Class-level methods
     module ClassMethods
-      def build_for_exhibit(id, exhibit)
+      def build_for_exhibit(id, exhibit, attributes = {})
         new(unique_key => id) do |doc|
-          doc.sidecar(exhibit).save! # save is a nop if the sidecar isn't modified.
+          doc.sidecar(exhibit).tap { |x| x.assign_attributes(attributes) }.save! # save is a nop if the sidecar isn't modified.
         end
       end
 

app/models/spotlight/resource.rb

@@ -13,6 +13,8 @@ class Resource < ActiveRecord::Base
     class_attribute :weight
 
     belongs_to :exhibit
+    has_many :solr_document_sidecars
+
     serialize :data, Hash
     store :metadata, accessors: [
       :enqueued_at,

app/models/spotlight/solr_document_sidecar.rb

@@ -3,9 +3,12 @@ module Spotlight
   # Exhibit-specific metadata for indexed documents
   class SolrDocumentSidecar < ActiveRecord::Base
     belongs_to :exhibit, required: true
+    belongs_to :resource
     belongs_to :document, required: true, polymorphic: true
     serialize :data, Hash
 
+    store :data, accessors: [:index_status]
+
     delegate :has_key?, :key?, to: :data
 
     def to_solr

app/services/spotlight/solr_document_builder.rb

@@ -51,7 +51,7 @@ def self.to_solr
     # @returns [#to_solr] something that responds to `to_solr'
     def exhibit_solr_doc(id)
       return NilSolrDocument unless document_model || id.present?
-      document_model.build_for_exhibit(id, exhibit)
+      document_model.build_for_exhibit(id, exhibit, resource: resource)
     end
 
     def unique_key

db/migrate/20160815165432_add_resource_to_solr_document_sidecar.rb

@@ -0,0 +1,8 @@
+class AddResourceToSolrDocumentSidecar < ActiveRecord::Migration
+  def change
+    add_column :spotlight_solr_document_sidecars, :resource_id, :integer
+    add_column :spotlight_solr_document_sidecars, :resource_type, :string
+
+    add_index :spotlight_solr_document_sidecars, [:resource_type, :resource_id], name: 'spotlight_solr_document_sidecars_resource'
+  end
+end

spec/services/spotlight/solr_document_builder_spec.rb

@@ -34,6 +34,15 @@
         expect(result).to include "spotlight_exhibit_slug_#{resource.exhibit.slug}_bsi"
         expect(result).to include "spotlight_exhibit_slug_#{resource_alt.exhibit.slug}_bsi"
       end
+
+      it 'creates a sidecar resource for the document' do
+        resource.document_builder.documents_to_index.first
+
+        expect(Spotlight::SolrDocumentSidecar.where(document_id: 'abc123', document_type: SolrDocument).size).to eq 2
+        sidecar = resource.solr_document_sidecars.find_by(document_id: 'abc123', document_type: SolrDocument)
+        expect(sidecar.exhibit).to eq resource.exhibit
+        expect(sidecar.resource).to eq resource
+      end
     end
   end
 end