show.json.jbuilder in pageflow-0.8.0

- old
+ new

@@ -1,8 +1,10 @@
 Pageflow.config.file_types.each do |file_type|
-  json.set!(file_type.collection_name) do
-    json.partial!(collection: @entry.files(file_type.model),
-                  partial: 'pageflow/editor/files/file',
-                  locals: {file_type: file_type},
-                  as: :file)
+  json.set!(file_type.collection_name, @entry.files(file_type.model)) do |file|
+    json.cache!(file) do
+      json.partial!(object: file,
+                    partial: 'pageflow/editor/files/file',
+                    locals: {file_type: file_type},
+                    as: :file)
+    end
   end
 end