Fix Universal Viewer embed code

app/controllers/concerns/hyrax/works_controller_behavior.rb

@@ -127,7 +127,10 @@ def inspect_work
 
     def manifest
       headers['Access-Control-Allow-Origin'] = '*'
-      render json: manifest_builder.to_h
+      respond_to do |wants|
+        wants.json { render json: manifest_builder.to_h }
+        wants.html { render json: manifest_builder.to_h }
+      end
     end
 
     private

app/views/hyrax/base/_representative_media.html.erb

@@ -2,7 +2,7 @@
   <% if defined?(viewer) && viewer %>
     <%= PulUvRails::UniversalViewer.script_tag %>
     <div class="viewer-wrapper">
-      <div class="uv viewer" data-uri="<%= main_app.polymorphic_path [main_app, :manifest, presenter], { locale: nil } %>"></div>
+      <div class="uv viewer" data-uri="<%= main_app.polymorphic_url [main_app, :manifest, presenter], { locale: nil } %>"></div>
     </div>
   <% else %>
     <%= media_display presenter.representative_presenter %>

spec/controllers/hyrax/generic_works_controller_spec.rb

@@ -609,9 +609,14 @@
         .and_return(manifest_factory)
     end
 
-    it "produces a manifest" do
+    it "produces a manifest for a json request" do
       get :manifest, params: { id: work, format: :json }
       expect(response.body).to eq "{\"test\":\"manifest\"}"
     end
+
+    it "produces a manifest for a html request" do
+      get :manifest, params: { id: work, format: :html }
+      expect(response.body).to eq "{\"test\":\"manifest\"}"
+    end
   end
 end

spec/features/work_show_spec.rb

@@ -43,7 +43,7 @@
       end
 
       # IIIF manifest does not include locale query param
-      expect(find('div.viewer:first')['data-uri']).to eq "/concern/generic_works/#{work.id}/manifest"
+      expect(find('div.viewer:first')['data-uri']).to eq "http://www.example.com/concern/generic_works/#{work.id}/manifest"
     end
 
     it "add work to a collection", clean_repo: true, js: true do