UUIDField from django-extensions is not available in Class Based Views

I have a web application where I use a couple of UUIDFields. In the Admin UI, in function based views and other Python code, these fields work as expected. However, when trying to list them in the 'fields' in a CBV, I get the error:

  FieldError(message) django.core.exceptions.FieldError: Unknown field(s) (ct_id) 

The subject field here is ct_id. But another one does the same.

From models.py:

  ct_id = UUIDField(_("UUID"), version=4, help_text=_('A unique identifier for this PCT.'))

As mentioned above, they work in Admin lists:

      list_display = ('data_name','prj_name','published','ct_id')  admin.site.register(DvBoolean, DvBooleanAdmin)

In function based views to create JSON for DynaTree:

  pct_json['tooltip'] = 'ct-'+pct.ct_id + " : " +pct.description

But in a CBV, this raises the error:

  fields =['published','prj_name','data_name',ct_id,]

Any ideas on how to make this work? I only want to render them for display, not for editing.

Thanks,

Tim

PS. This question is also on StackOverflow at:   http://goo.gl/mA7I6V 

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