djapian/backend/xap.py :  - A field_value = None is not indexable  - Values obtained from functions need to be index with doc.add_value  - Index fields other than Django type
djapian/backend/xap.py :
 - A field_value = None is not indexable
 - Values obtained from functions need to be index with doc.add_value
 - Index fields other than Django type


pombreda/djapian,google-code-export/djapian