Thanks, adding the default fixed it. Although the development
datastore viewer still does not work correctly. I can not edit the new
field for the old or NEW records.
When I uploaded to production all worked fine. The production
dataviewer displayed "Missing" for the field in the old rows, and th
> I can insert new rows fine, and see them in the Development server
> datastore viewer. But when I try to access the new property contains
> "NoneType: None".
>
You can assign a default value to the property, it will be used when
an entity has no value for the property:
boat = db.StringPropert
