app/models/spotlight/resource.rb in blacklight-spotlight-1.0.0 vs app/models/spotlight/resource.rb in blacklight-spotlight-1.1.0

@@ -78,13 +78,15 @@
       def batch_size
         Spotlight::Engine.config.solr_batch_size
       end
 
       def write_to_index(batch)
-        return unless write?
+        documents = documents_that_have_ids(batch)
+        return unless write? && documents.present?
+
         blacklight_solr.update params: { commitWithin: 500 },
-                               data: batch.to_json,
+                               data: documents.to_json,
                                headers: { 'Content-Type' => 'application/json' }
       end
 
       def commit
         return unless write?
@@ -97,9 +99,13 @@
         exhibit.touch
       end
 
       def write?
         Spotlight::Engine.config.writable_index
+      end
+
+      def documents_that_have_ids(document_list)
+        document_list.reject { |d| d[document_builder.document_model.unique_key.to_sym].blank? }
       end
     end
   end
 end